Median age
Median age of the population
Link with national income+0.86essentially a measure of national income
Links that hold up23of 158 pairs tested
Unityearshigher is neither better nor worse
SourceUN_WPPCC BY 3.0 IGO
What this measures. The age that splits a population in half: half are older and half are younger. The shares aged under 15 and over 65 are already on the site. All three are treated as measuring the same thing. They are readings of the same age pyramid, so they are bound to match, and their agreement is not a finding. No "better" direction is set.
How it has moved
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Every country, every year
One row per country and one column per year, sorted by the most recent value. Hover over any cell to see the figure. The country names link to each country’s page.
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Links that hold up
r is how closely two measures rise and fall together across countries, from −1 (opposite) to +1 (in step), where 0 means no link. These pairs are ranked by the link after adjusting for national income, which means comparing countries with the same GDP per person. Each pair passed three checks. The link held after that adjustment. It was unlikely to be chance (q of 0.05 or less), even allowing for countries in the same region being alike and for the many pairs tested. And the two are not just two measures of the same thing. Very small q values are written in short form: 8.0e-5 means 0.000080.
| Measure | Before adjusting | After adjusting | q | Countries | Tracks income? |
|---|---|---|---|---|---|
| Median age and Birth rateWhere Median age is higher, Birth rate tends to be lower: a strong link that holds when only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Birth rate by country | -0.93 | -0.74 | 0.009 | 199 | proxy |
| Median age and Old-age spendingWhere Median age is higher, Old-age spending tends to be higher: a moderate link that holds when only countries with similar income are compared. Old-age spending by country | +0.66 | +0.64 | 0.031 | 42 | independent |
| Median age and Gender Inequality IndexWhere Median age is higher, Gender Inequality Index tends to be lower: a moderate link that holds when only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Gender Inequality Index by country | -0.90 | -0.63 | 0.019 | 169 | proxy |
| Median age and Fertility rateWhere Median age is higher, Fertility rate tends to be lower: a moderate link that holds when only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Fertility rate by country | -0.87 | -0.57 | 0.032 | 199 | proxy |
| Median age and Fixed broadbandWhere Median age is higher, Fixed broadband tends to be higher: a moderate link that holds when only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Fixed broadband by country | +0.86 | +0.54 | 0.003 | 196 | proxy |
| Median age and RedistributionWhere Median age is higher, Redistribution tends to be higher: a moderate link that holds when only countries with similar income are compared. Redistribution by country | +0.65 | +0.51 | 0.032 | 45 | moderate |
| Median age and PISA mathsWhere Median age is higher, PISA maths tends to be higher: a moderate link that holds when only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. PISA maths by country | +0.72 | +0.51 | 0.049 | 87 | high |
| Median age and PISA scienceWhere Median age is higher, PISA science tends to be higher: a moderate link that holds when only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. PISA science by country | +0.72 | +0.50 | 0.032 | 87 | high |
| Median age and Hospital bedsWhere Median age is higher, Hospital beds tends to be higher: a moderate link that holds when only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Hospital beds by country | +0.66 | +0.49 | 0.003 | 171 | high |
| Median age and PISA readingWhere Median age is higher, PISA reading tends to be higher: a moderate link that holds when only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. PISA reading by country | +0.71 | +0.49 | 0.011 | 87 | high |
| Median age and PhysiciansWhere Median age is higher, Physicians tends to be higher: a moderate link that holds when only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Physicians by country | +0.82 | +0.48 | 0.034 | 186 | proxy |
| Median age and HDIWhere Median age is higher, HDI tends to be higher: a moderate link that holds when only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. HDI by country | +0.88 | +0.45 | 0.043 | 187 | proxy |
| Median age and Tobacco useWhere Median age is higher, Tobacco use tends to be higher: a moderate link that holds when only countries with similar income are compared. Tobacco use by country | +0.39 | +0.44 | 0.040 | 164 | independent |
| Median age and Religion very importantWhere Median age is higher, Religion very important tends to be lower: a moderate link that holds when only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Religion very important by country | -0.71 | -0.44 | 0.024 | 107 | high |
| Median age and Infrastructure scoreWhere Median age is higher, Infrastructure score tends to be higher: a moderate link that holds when only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Infrastructure score by country | +0.86 | +0.41 | 0.006 | 197 | proxy |
| Median age and Religious attendanceWhere Median age is higher, Religious attendance tends to be lower: a weak link that holds when only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Religious attendance by country | -0.71 | -0.39 | 0.013 | 105 | high |
| Median age and Tertiary enrollmentWhere Median age is higher, Tertiary enrollment tends to be higher: a weak link that holds when only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Tertiary enrollment by country | +0.73 | +0.35 | 0.033 | 178 | high |
| Median age and Pupil-teacher ratioWhere Median age is higher, Pupil-teacher ratio tends to be lower: a weak link that holds when only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Pupil-teacher ratio by country | -0.78 | -0.32 | 0.019 | 180 | proxy |
| Median age and Confidence in religious institutionsWhere Median age is higher, Confidence in religious institutions tends to be lower: a weak link that holds when only countries with similar income are compared. Confidence in religious institutions by country | -0.56 | -0.31 | 0.024 | 107 | moderate |
| Median age and Education scoreWhere Median age is higher, Education score tends to be higher: a weak link that holds when only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Education score by country | +0.78 | +0.28 | 0.033 | 191 | proxy |
| Median age and Mean years of schoolingWhere Median age is higher, Mean years of schooling tends to be higher: a weak link that holds when only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Mean years of schooling by country | +0.78 | +0.26 | 0.035 | 187 | proxy |
| Median age and Child stuntingWhere Median age is higher, Child stunting tends to be lower: a weak link that holds when only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Child stunting by country | -0.73 | -0.26 | 0.020 | 156 | proxy |
| Median age and Government consumptionWhere Median age is higher, Government consumption tends to be higher: a weak link that holds when only countries with similar income are compared. Government consumption by country | +0.17 | +0.13 | 0.035 | 178 | independent |
Links that don’t count as findings
These go together strongly, but they are built from the same numbers or measure the same thing. So they are bound to match, or their match shows that the measures agree, not something about the world.
| Measure | Before adjusting | After adjusting | q | Countries | Tracks income? |
|---|---|---|---|---|---|
| Median age and Population 65+Two ways of measuring the same thing, so their agreement tells you about measurement, not about the world. Population 65+ by country | +0.94 | +0.88 | 0.003 | 199 | high |
| Median age and Population 0-14Two ways of measuring the same thing, so their agreement tells you about measurement, not about the world. Population 0-14 by country | -0.96 | -0.86 | 0.003 | 199 | proxy |
How much the other measures account for
The 71 most widely reported measures boil down to a few broad patterns. This table shows how much of the differences between countries on this measure those patterns account for, adding one pattern at a time. The patterns are rebuilt without this measure, and without anything built from the same numbers or measuring the same thing. So it never predicts itself under another name. The figures use the 133 countries reporting all of them, and 68 candidate measures.
This shows how much it moves with the others. It does not explain anything. Measures that move together end up on the same pattern whether or not anything connects them. And the countries here are the best-documented ones. A high figure means this measure is largely predictable from the others, not that they produce it.
| Patterns used | Share of this measure accounted for | Added by this pattern |
|---|---|---|
| 1 | 80% | — |
| 2 | 80% | +0% |
| 3 | 81% | +1% |
| 4 | 82% | +1% |
| 5 | 86% | +4% |
| 6 | 87% | +1% |
This measure sits on the pattern all the measures share, which is national income under another name.
How it differs by category
This compares the measure across groups of countries, such as those sharing a main religion, instead of against another number. The figure is the share of the differences between countries on this measure that lies between the groups, on a scale from 0 to 1. It is shown before and after adjusting for national income.
The “between groups” figure runs from 0 (the groups are no different) to 1 (the groups explain all the differences between countries). Groups have no up or down, so this says how much the groups differ, never which way. For that, read the group averages. The figure also tends to rise when there are more groups. So to judge whether it could be chance (q), we shuffle the same labels among the same countries many times and see how often a figure this big turns up. Then we allow for the fact that many measures are checked at once, since with enough checks a few big figures turn up by luck alone. Groups with fewer than 12 countries are left out. And countries that share a label share a lot else. Adjusting for income rules out one third factor, but leaves language, region, legal tradition and history untouched.
| Grouped by | Between groups | After income | q | Groups at each end |
|---|---|---|---|---|
| Last European coloniser | 0.41 | 0.24 | 0.120 | highest: Never a European colony 30.3 · lowest: France 21 years |
| Largest religious group | 0.29 | 0.26 | 0.003 | highest: Christians 31.1 · lowest: Muslims 25.2 years |
Every other pair
Everything else this measure was tested against, apart from the links that hold up and the pairs built from the same numbers. Sorted by the link after adjusting. Search by name; every column sorts. A small adjusted figure is a result too. It says the two do not move together once income is set aside.
133 of 133
| Median age and Public social spendingComparing only countries with similar income it is still +0.59, but that could easily be chance once we allow for countries in the same region being alike. Public social spending by country | +0.65 | +0.59 | 0.066 | 42 | moderate |
| Median age and Informal employmentLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (-0.51) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Informal employment by country | -0.88 | -0.51 | 0.177 | 140 | proxy |
| Median age and Population growthComparing only countries with similar income it is still -0.47, but that could easily be chance once we allow for countries in the same region being alike. Population growth by country | -0.61 | -0.47 | 0.057 | 199 | moderate |
| Median age and Inequality-adjusted HDILinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.46) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Inequality-adjusted HDI by country | +0.90 | +0.46 | 0.107 | 167 | proxy |
| Median age and One-person householdsLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.43) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. One-person households by country | +0.74 | +0.43 | 0.051 | 150 | high |
| Median age and Recycling rateCould easily be chance once only countries with similar income are compared. Recycling rate by country | +0.44 | +0.43 | 0.182 | 35 | moderate |
| Median age and Adolescent fertilityLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (-0.41) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Adolescent fertility by country | -0.79 | -0.41 | 0.134 | 199 | proxy |
| Median age and Women's age at first marriageCould easily be chance once only countries with similar income are compared. Women's age at first marriage by country | +0.39 | +0.41 | 0.184 | 40 | moderate |
| Median age and Life expectancyLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.40) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Life expectancy by country | +0.84 | +0.40 | 0.139 | 199 | proxy |
| Median age and Alcohol consumptionLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.40) could easily be chance. Alcohol consumption by country | +0.61 | +0.40 | 0.173 | 182 | moderate |
| Median age and Frequent prayerLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (-0.37) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Frequent prayer by country | -0.71 | -0.37 | 0.069 | 78 | high |
| Median age and Road traffic deathsLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (-0.37) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Road traffic deaths by country | -0.70 | -0.37 | 0.080 | 183 | high |
| Median age and Infant mortalityLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (-0.36) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Infant mortality by country | -0.79 | -0.36 | 0.097 | 188 | proxy |
| Median age and Unemployment benefit spendingCould easily be chance once only countries with similar income are compared. Unemployment benefit spending by country | +0.31 | +0.34 | 0.192 | 39 | moderate |
| Median age and Health scoreCould easily be chance once only countries with similar income are compared. Health score by country | +0.43 | +0.34 | 0.079 | 186 | moderate |
| Median age and Trust in governmentCould easily be chance once only countries with similar income are compared. Trust in government by country | -0.12 | -0.33 | 0.148 | 47 | moderate |
| Median age and Slum share of urban populationLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (-0.33) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Slum share of urban population by country | -0.75 | -0.33 | 0.127 | 184 | high |
| Median age and Retirement age, menCould easily be chance once only countries with similar income are compared. Retirement age, men by country | -0.41 | -0.31 | 0.430 | 49 | independent |
| Median age and Under-5 mortalityLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (-0.31) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Under-5 mortality by country | -0.77 | -0.31 | 0.118 | 188 | proxy |
| Median age and Expected schoolingLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.30) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Expected schooling by country | +0.77 | +0.30 | 0.105 | 187 | proxy |
| Median age and Women's political empowermentLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.30) could easily be chance. Women's political empowerment by country | +0.52 | +0.30 | 0.258 | 168 | moderate |
| Median age and Health spendingCould easily be chance once only countries with similar income are compared. Health spending by country | +0.29 | +0.29 | 0.061 | 186 | independent |
| Median age and Anaemia in womenLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (-0.29) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Anaemia in women by country | -0.67 | -0.29 | 0.255 | 185 | high |
| Median age and Voice and accountabilityLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.29) could easily be chance. Voice and accountability by country | +0.61 | +0.29 | 0.180 | 195 | moderate |
| Median age and Gini indexCould easily be chance once only countries with similar income are compared. Gini index by country | -0.38 | -0.29 | 0.155 | 163 | moderate |
| Median age and Participatory democracyLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.28) could easily be chance. Participatory democracy by country | +0.54 | +0.28 | 0.200 | 168 | moderate |
| Median age and Civil liberties (FH)Linked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (-0.28) could easily be chance. Civil liberties (FH) by country | -0.53 | -0.28 | 0.130 | 188 | moderate |
| Median age and Liberal democracyLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.28) could easily be chance. Liberal democracy by country | +0.57 | +0.28 | 0.210 | 168 | moderate |
| Median age and Government expenseCould easily be chance once only countries with similar income are compared. Government expense by country | +0.38 | +0.28 | 0.190 | 151 | moderate |
| Median age and Food insecurityLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (-0.27) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Food insecurity by country | -0.80 | -0.27 | 0.122 | 155 | proxy |
| Median age and Political rights (FH)Linked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (-0.27) could easily be chance. Political rights (FH) by country | -0.51 | -0.27 | 0.164 | 188 | moderate |
| Median age and Muslim shareCould easily be chance once only countries with similar income are compared. Muslim share by country | -0.33 | -0.27 | 0.146 | 184 | independent |
| Median age and Basic sanitationLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.26) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Basic sanitation by country | +0.75 | +0.26 | 0.236 | 197 | high |
| Median age and ResearchersLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.26) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Researchers by country | +0.68 | +0.26 | 0.251 | 131 | proxy |
| Median age and Governance scoreLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.26) could easily be chance. Governance score by country | +0.54 | +0.26 | 0.223 | 171 | moderate |
| Median age and Youth not in work or studyLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (-0.26) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Youth not in work or study by country | -0.59 | -0.26 | 0.075 | 175 | high |
| Median age and Electoral democracyLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.26) could easily be chance. Electoral democracy by country | +0.52 | +0.26 | 0.282 | 168 | moderate |
| Median age and GDP growthCould easily be chance once only countries with similar income are compared. GDP growth by country | -0.29 | -0.26 | 0.191 | 199 | moderate |
| Median age and Religiously unaffiliatedLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.26) could easily be chance. Religiously unaffiliated by country | +0.50 | +0.26 | 0.155 | 184 | moderate |
| Median age and Suicide rateCould easily be chance once only countries with similar income are compared. Suicide rate by country | +0.30 | +0.26 | 0.236 | 179 | independent |
| Median age and Health coverage indexLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.26) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Health coverage index by country | +0.80 | +0.26 | 0.467 | 186 | proxy |
| Median age and Married by 18Linked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (-0.25) could easily be chance. Married by 18 by country | -0.61 | -0.25 | 0.078 | 136 | moderate |
| Median age and Tax revenueCould easily be chance once only countries with similar income are compared. Tax revenue by country | +0.39 | +0.25 | 0.294 | 151 | moderate |
| Median age and Free and fair electionsLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.25) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Free and fair elections by country | +0.59 | +0.25 | 0.212 | 168 | high |
| Median age and Male labor participationCould easily be chance once only countries with similar income are compared. Male labor participation by country | -0.13 | -0.24 | 0.288 | 177 | independent |
| Median age and Hours workedCould easily be chance once only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Hours worked by country | -0.38 | -0.23 | 0.238 | 38 | high |
| Median age and Equality scoreLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.23) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Equality score by country | +0.65 | +0.23 | 0.130 | 163 | high |
| Median age and Birth registrationLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.22) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Birth registration by country | +0.66 | +0.22 | 0.243 | 166 | proxy |
| Median age and Adult literacyLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.22) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Adult literacy by country | +0.68 | +0.22 | 0.197 | 135 | high |
| Median age and Children with one parentCould easily be chance once only countries with similar income are compared. Children with one parent by country | -0.22 | -0.22 | 0.657 | 38 | independent |
| Median age and Maternal mortalityLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (-0.22) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Maternal mortality by country | -0.68 | -0.22 | 0.176 | 187 | proxy |
| Median age and Freedom of associationCould easily be chance once only countries with similar income are compared. Freedom of association by country | +0.34 | +0.22 | 0.379 | 168 | moderate |
| Median age and Regime typeLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.20) could easily be chance. Regime type by country | +0.50 | +0.20 | 0.416 | 168 | moderate |
| Median age and Labour scoreLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.20) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Labour score by country | +0.69 | +0.20 | 0.376 | 185 | high |
| Median age and Political civil libertiesCould easily be chance once only countries with similar income are compared. Political civil liberties by country | +0.33 | +0.20 | 0.382 | 168 | moderate |
| Median age and Active labour market spendingCould easily be chance once only countries with similar income are compared. Active labour market spending by country | +0.33 | +0.20 | 0.253 | 42 | moderate |
| Median age and Rule of lawLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.20) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Rule of law by country | +0.68 | +0.20 | 0.323 | 195 | high |
| Median age and Adult obesityCould easily be chance once only countries with similar income are compared. Adult obesity by country | +0.15 | -0.19 | 0.367 | 188 | moderate |
| Median age and Births outside marriageCould easily be chance once only countries with similar income are compared. Births outside marriage by country | -0.20 | -0.19 | 0.698 | 42 | independent |
| Median age and Secondary enrollmentLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.19) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Secondary enrollment by country | +0.70 | +0.19 | 0.293 | 187 | high |
| Median age and Gender Development IndexLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.18) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Gender Development Index by country | +0.61 | +0.18 | 0.119 | 180 | high |
| Median age and Skilled birth attendanceLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.17) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Skilled birth attendance by country | +0.65 | +0.17 | 0.262 | 177 | high |
| Median age and Out of school, primaryCould easily be chance once only countries with similar income are compared. Out of school, primary by country | -0.49 | -0.17 | 0.167 | 186 | moderate |
| Median age and Freedom of expressionCould easily be chance once only countries with similar income are compared. Freedom of expression by country | +0.29 | +0.17 | 0.427 | 168 | moderate |
| Median age and Internet usersLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.17) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Internet users by country | +0.78 | +0.17 | 0.176 | 197 | proxy |
| Median age and Gender wage gapCould easily be chance once only countries with similar income are compared. Gender wage gap by country | +0.13 | +0.17 | 0.563 | 38 | independent |
| Median age and Christian shareCould easily be chance once only countries with similar income are compared. Christian share by country | +0.10 | +0.17 | 0.551 | 184 | independent |
| Median age and Family benefits spendingCould easily be chance once only countries with similar income are compared. Family benefits spending by country | +0.27 | +0.17 | 0.464 | 42 | independent |
| Median age and HIV prevalenceCould easily be chance once only countries with similar income are compared. HIV prevalence by country | -0.28 | -0.17 | 0.402 | 148 | moderate |
| Median age and Vulnerable employmentLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (-0.16) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Vulnerable employment by country | -0.77 | -0.16 | 0.417 | 177 | proxy |
| Median age and Political corruptionLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (-0.16) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Political corruption by country | -0.62 | -0.16 | 0.345 | 168 | high |
| Median age and UndernourishmentLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (-0.15) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Undernourishment by country | -0.68 | -0.15 | 0.116 | 163 | proxy |
| Median age and Migrant share of populationCould easily be chance once only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Migrant share of population by country | +0.42 | -0.15 | 0.645 | 198 | high |
| Median age and Gender scoreCould easily be chance once only countries with similar income are compared. Gender score by country | +0.37 | +0.15 | 0.414 | 180 | moderate |
| Median age and Basic water accessLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.15) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Basic water access by country | +0.71 | +0.15 | 0.261 | 197 | proxy |
| Median age and Civil society participationCould easily be chance once only countries with similar income are compared. Civil society participation by country | +0.24 | +0.15 | 0.422 | 168 | independent |
| Median age and Regulatory qualityLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.15) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Regulatory quality by country | +0.73 | +0.15 | 0.447 | 195 | proxy |
| Median age and Corporate tax rateCould easily be chance once only countries with similar income are compared. Corporate tax rate by country | -0.21 | +0.14 | 0.556 | 86 | moderate |
| Median age and Tuberculosis incidenceLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (-0.13) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Tuberculosis incidence by country | -0.50 | -0.13 | 0.249 | 196 | high |
| Median age and Divorce rate (UN)Could easily be chance once only countries with similar income are compared. Divorce rate (UN) by country | +0.11 | +0.13 | 0.239 | 95 | independent |
| Median age and Self-reported happinessCould easily be chance once only countries with similar income are compared. Self-reported happiness by country | +0.20 | -0.13 | 0.707 | 107 | moderate |
| Median age and Armed conflict presentCould easily be chance once only countries with similar income are compared. Armed conflict present by country | -0.41 | -0.13 | 0.350 | 188 | moderate |
| Median age and Single-parent householdsAlmost no link either way. Single-parent households by country | +0.05 | +0.13 | 0.420 | 150 | independent |
| Median age and Age at childbearingCould easily be chance once only countries with similar income are compared. Age at childbearing by country | +0.44 | +0.13 | 0.155 | 199 | moderate |
| Median age and Refugees originatingCould easily be chance once only countries with similar income are compared. Refugees originating by country | -0.15 | +0.13 | 0.192 | 192 | moderate |
| Median age and Electricity accessLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.13) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Electricity access by country | +0.68 | +0.13 | 0.112 | 198 | high |
| Median age and Employment in agricultureLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (-0.13) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Employment in agriculture by country | -0.74 | -0.13 | 0.368 | 177 | proxy |
| Median age and Conflict deathsAlmost no link either way. Conflict deaths by country | -0.06 | +0.12 | 0.463 | 188 | moderate |
| Median age and Military spendingCould easily be chance once only countries with similar income are compared. Military spending by country | +0.14 | +0.12 | 0.685 | 156 | independent |
| Median age and Primary enrollmentAlmost no link either way. Primary enrollment by country | +0.04 | +0.11 | 0.232 | 192 | independent |
| Median age and Forest areaAlmost no link either way. Forest area by country | +0.08 | +0.11 | 0.658 | 196 | independent |
| Median age and Corruption Perceptions IndexLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.11) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Corruption Perceptions Index by country | +0.64 | +0.11 | 0.615 | 175 | high |
| Median age and Life satisfactionLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.11) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Life satisfaction by country | +0.72 | +0.11 | 0.633 | 160 | proxy |
| Median age and Primary completionLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.11) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Primary completion by country | +0.69 | +0.11 | 0.218 | 161 | proxy |
| Median age and Control of corruptionLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, what remains (+0.10) could easily be chance. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Control of corruption by country | +0.65 | +0.10 | 0.640 | 195 | high |
| Median age and Environment scoreCould easily be chance once only countries with similar income are compared. Environment score by country | -0.24 | +0.10 | 0.514 | 196 | moderate |
| Median age and Government effectivenessLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, almost nothing remains. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Government effectiveness by country | +0.74 | +0.10 | 0.604 | 195 | proxy |
| Median age and Women ministersCould easily be chance once only countries with similar income are compared. Women ministers by country | +0.22 | +0.09 | 0.479 | 185 | independent |
| Median age and Marriage rate (UN)Could easily be chance once only countries with similar income are compared. Marriage rate (UN) by country | -0.22 | -0.09 | 0.657 | 104 | independent |
| Median age and Pre-trial detainee shareCould easily be chance once only countries with similar income are compared. Pre-trial detainee share by country | -0.29 | -0.08 | 0.569 | 172 | independent |
| Median age and Women in parliamentCould easily be chance once only countries with similar income are compared. Women in parliament by country | +0.25 | +0.08 | 0.441 | 185 | independent |
| Median age and Agricultural landCould easily be chance once only countries with similar income are compared. Agricultural land by country | -0.21 | +0.08 | 0.416 | 195 | independent |
| Median age and Divorce rateAlmost no link either way. Divorce rate by country | -0.10 | -0.07 | 0.693 | 45 | independent |
| Median age and Protected landCould easily be chance once only countries with similar income are compared. Protected land by country | +0.20 | +0.07 | 0.682 | 196 | independent |
| Median age and Government spending per capitaCould easily be chance once only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Government spending per capita by country | +0.31 | -0.07 | 0.741 | 43 | proxy |
| Median age and Extreme poverty rateLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, almost nothing remains. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Extreme poverty rate by country | -0.68 | -0.06 | 0.364 | 163 | proxy |
| Median age and Trade opennessCould easily be chance once only countries with similar income are compared. Trade openness by country | +0.40 | +0.06 | 0.641 | 180 | moderate |
| Median age and CO2 per capitaCould easily be chance once only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. CO2 per capita by country | +0.32 | -0.06 | 0.831 | 191 | proxy |
| Median age and DTP3 immunisationCould easily be chance once only countries with similar income are compared. DTP3 immunisation by country | +0.47 | +0.06 | 0.718 | 186 | moderate |
| Median age and UnemploymentCould easily be chance once only countries with similar income are compared. Unemployment by country | -0.10 | -0.06 | 0.799 | 177 | independent |
| Median age and Political stabilityLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, almost nothing remains. Political stability by country | +0.53 | +0.06 | 0.771 | 195 | moderate |
| Median age and Aid givenAlmost no link either way. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Aid given by country | -0.02 | +0.05 | 0.786 | 47 | high |
| Median age and Wellbeing scoreLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, almost nothing remains. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Wellbeing score by country | +0.59 | -0.05 | 0.854 | 107 | high |
| Median age and UrbanizationLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, almost nothing remains. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Urbanization by country | +0.54 | -0.04 | 0.800 | 199 | high |
| Median age and Out-of-pocket health spendingCould easily be chance once only countries with similar income are compared. Out-of-pocket health spending by country | -0.27 | +0.03 | 0.403 | 186 | moderate |
| Median age and FDI inflowsAlmost no link either way. FDI inflows by country | +0.02 | -0.03 | 0.718 | 195 | independent |
| Median age and Premature NCD mortalityLinked across countries, but mostly as richer countries differ from poorer ones: comparing only countries with similar income, almost nothing remains. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Premature NCD mortality by country | -0.58 | -0.03 | 0.860 | 179 | high |
| Median age and Female labor participationAlmost no link either way. Female labor participation by country | +0.07 | +0.03 | 0.796 | 177 | independent |
| Median age and Women in a unionCould easily be chance once only countries with similar income are compared. Women in a union by country | -0.36 | -0.03 | 0.867 | 192 | moderate |
| Median age and Compulsory schoolingCould easily be chance once only countries with similar income are compared. Compulsory schooling by country | +0.35 | +0.03 | 0.737 | 185 | moderate |
| Median age and Mobile subscriptionsCould easily be chance once only countries with similar income are compared. Mobile subscriptions by country | +0.38 | +0.02 | 0.820 | 198 | moderate |
| Median age and Education spendingAlmost no link either way. Education spending by country | +0.03 | +0.02 | 0.648 | 187 | independent |
| Median age and Interpersonal trustCould easily be chance once only countries with similar income are compared. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Interpersonal trust by country | +0.46 | -0.02 | 0.958 | 107 | high |
| Median age and InflationCould easily be chance once only countries with similar income are compared. Inflation by country | -0.12 | -0.02 | 0.727 | 189 | independent |
| Median age and Retirement age, womenAlmost no link either way. Retirement age, women by country | -0.07 | -0.02 | 0.972 | 49 | independent |
| Median age and Public order spendingAlmost no link either way. Both mostly measure national income in another way, so only the adjusted figure is worth reading. Public order spending by country | -0.04 | +0.01 | 0.978 | 37 | high |
| Median age and Women in managementCould easily be chance once only countries with similar income are compared. Women in management by country | +0.24 | -0.01 | 0.954 | 149 | moderate |
| Median age and Market-income GiniCould easily be chance once only countries with similar income are compared. Market-income Gini by country | -0.22 | +0.00 | 0.987 | 45 | moderate |
| Median age and Homicide rateAlmost no link either way. Homicide rate by country | -0.06 | +0.00 | 0.987 | 170 | moderate |
| Median age and Marriage rateAlmost no link either way. Marriage rate by country | -0.01 | +0.00 | 0.992 | 46 | independent |
| Median age and GDP per capita (PPP)One side of this pair is national income itself, the thing the other figures adjust for. Adjusting income for income leaves nothing, so there is no adjusted figure. The unadjusted link shows how closely the other measure follows income. GDP per capita (PPP) by country | +0.69 | — | — | 199 | proxy |
| Median age and GNI per capita (PPP)One side of this pair is national income itself, the thing the other figures adjust for. Adjusting income for income leaves nothing, so there is no adjusted figure. The unadjusted link shows how closely the other measure follows income. GNI per capita (PPP) by country | +0.71 | — | — | 197 | proxy |
| Median age and GDP per capita (market)One side of this pair is national income itself, the thing the other figures adjust for. Adjusting income for income leaves nothing, so there is no adjusted figure. The unadjusted link shows how closely the other measure follows income. GDP per capita (market) by country | +0.62 | — | — | 199 | proxy |
Source
United Nations Department of Economic and Social Affairs, Population Division · via Our World in Data
CC BY 3.0 IGO · licence terms · updated biennial
United Nations, Department of Economic and Social Affairs, Population Division: World Population Prospects 2024 and Estimates and Projections of Women of Reproductive Age Who Are Married or in a Union