What question did this study set out to answer?

To investigate the association between waist-to-height ratio and hypertension risk and identify specific thresholds in Chinese adults.

Waist-to-height ratio and hypertension risk: a retrospective cohort analysis of the CHARLS

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Retrospective cohort analysis reveals waist-to-height ratio threshold for hypertension risk, suggesting improved screening methods.

To investigate the association between waist-to-height ratio and hypertension risk and identify specific thresholds in Chinese adults.
Retrospective cohort study utilizing data from the CHARLS involving 7,712 participants aged ≥ 45 years.
Primary exposure was waist-to-height ratio; main outcome was incident hypertension.
Used restricted cubic spline regression to model associations and two-piecewise linear regression for threshold effect analysis.
Identified inflection point for waist-to-height ratio at 0.443 for hypertension risk.
Higher waist-to-height ratio above the cut point associated with an 82% increased risk of hypertension (HR = 1.82, 95% CI: 1.68–1.96).
Risk difference above and below the cut point was significant (HR = 2.28, 95% CI: 1.96–2.66).

Ma et al. (2026) studied this question.

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