CorrelateAI › Pairs
US Adult Obesity vs US Birth Rate
US Adult Obesity and US Birth Rate correlate at r = -0.93 over 45 years (1980–2024), p < 0.0001. With the time trend removed, r = +0.46. Direction flips without the trend.
Verdict: Direction flips without the trend. The raw correlation is -0.93, but once each series' time trend is removed it becomes 0.46. The year-to-year movements run the opposite way to the long-run trends, so the headline number is misleading.
- Pearson r
- -0.93
- p-value
- < 0.0001
- Years compared (n)
- 45 (1980–2024)
- 95% confidence interval
- -0.96 to -0.88
- Correlation with the time trend removed
- +0.46
Sources
- US Adult Obesity (% of adults): Our World in Data. US Adult Obesity (Our World in Data: Obesity among adults, BMI >= 30 kg/m2 (crude estimate) (%) - Sex: both sexes - Age group: 18+ years of age).
- US Birth Rate (per 1,000 people): World Bank. US Birth Rate (World Bank indicator SP.DYN.CBRT.IN).
Related pairs
- US Adult Obesity vs US Population (r = +1.00)
- US Median Age vs US Adult Obesity (r = +0.99)
- US Marriage Rate vs US Adult Obesity (r = -0.98)
- US Adult Obesity vs US Resident Patent Applications (r = +0.98)
- US Adult Obesity vs US Mobile Subscriptions (r = +0.98)
- US Adult Obesity vs US Internet Users (r = +0.98)
Correlation does not imply causation. How the verdict is worked out.