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US Median Age vs US Adult Obesity

US Median Age and US Adult Obesity correlate at r = +0.99 over 44 years (1980–2023), p < 0.0001. With the time trend removed, r = +0.57. Interpret with caution.

Verdict: Interpret with caution. Much of the apparent link is driven by a shared time trend: r falls from 0.99 to 0.57 once the trend is removed.

Pearson r
+0.99
p-value
< 0.0001
Years compared (n)
44 (1980–2023)
95% confidence interval
0.98 to 1.00
Correlation with the time trend removed
+0.57

Sources

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Correlation does not imply causation. How the verdict is worked out.