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US Internet Usage vs US Health Expenditure

US Internet Usage and US Health Expenditure correlate at r = +0.89 over 24 years (2000–2023), p < 0.0001. With the time trend removed, r = +0.31. Interpret with caution.

Verdict: Interpret with caution. Much of the apparent link is driven by a shared time trend: r falls from 0.89 to 0.31 once the trend is removed.

Pearson r
+0.89
p-value
< 0.0001
Years compared (n)
24 (2000–2023)
95% confidence interval
0.77 to 0.95
Correlation with the time trend removed
+0.31

Sources

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