Young females linked to older females per GDP
Comparing Population ages 75-79, female, per unit of GDP with Population ages 15-19, female, per capita across 209 countries, 2025–2025.
- Rank correlation
- +0.57
- Holding size constant
- +0.41
- Countries compared
- 209
- Period
- 2025–2025
What might link these
The correlation might be driven by countries' demographic structures and economic development. A careful reader should consider factors like healthcare quality and social security, which could influence both indicators. Education level is a likely confounder.
Why this is not proof of anything
This is a correlation across countries, not an experiment. It cannot show that either indicator causes the other, and both may simply follow a third thing. This correlation could mislead by implying a direct relationship between the two age groups, when in fact it may be driven by underlying factors like overall population health and economic conditions.
The second figure above repeats the measurement with national population and income held constant. It is the more conservative number: a relationship that largely disappears there was mostly telling you that larger, richer countries have more of most things.
How this was measured
Both indicators were ranked across every country reporting each, and the two rankings compared — ranks rather than raw values, because a handful of very large countries can otherwise manufacture a relationship on their own. The calculation is arithmetic over figures already published on this site; the commentary above is drafted from the two indicator names and the resulting coefficients.