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US Adolescent Birth Rate vs US Forest Area
US Adolescent Birth Rate and US Forest Area correlate at r = -0.94 over 34 years (1990–2023), p < 0.0001. With the time trend removed, r = +0.25. Likely spurious (shared time trend).
Verdict: Likely spurious (shared time trend). Both series mostly just trend over time. After removing that trend the correlation collapses to 0.25 — the relationship is probably coincidental, not causal.
- Pearson r
- -0.94
- p-value
- < 0.0001
- Years compared (n)
- 34 (1990–2023)
- 95% confidence interval
- -0.97 to -0.89
- Correlation with the time trend removed
- +0.25
Sources
- US Adolescent Birth Rate (per 1,000 women 15–19): World Bank. US Adolescent Birth Rate (World Bank indicator SP.ADO.TFRT).
- US Forest Area (% of land): World Bank. US Forest Area (World Bank indicator AG.LND.FRST.ZS).
Related pairs
- US Forest Area vs US Mobile Subscriptions (r = +0.98)
- US Forest Area vs US Resident Patent Applications (r = +0.97)
- US Adult Obesity vs US Forest Area (r = +0.97)
- US Forest Area vs US Population (r = +0.97)
- Atmospheric CO₂ (Mauna Loa) vs US Forest Area (r = +0.95)
- Atmospheric CO₂ (Mauna Loa) vs US Adolescent Birth Rate (r = -0.95)
Correlation does not imply causation. How the verdict is worked out.