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Abstract Background The global health crisis of obesity has prompted a need for better indicators of abdominal obesity than body mass index, with sagittal abdominal diameter emerging as a potential candidate. Nonetheless, the association between sagittal abdominal diameter-to-height ratio (SADHtR) and mortality remains inadequately established. Our objective was to contribute novel evidence to this association. Methods This study encompassed 12,572 participants aged 18–80 years from the National Health and Nutrition Examination Survey 2011–2016. Mortality data were tracked until December 31, 2019. Weighted multivariable Cox proportional hazard models were employed to evaluate the association between SADHtR and all-cause mortality, with subgroup analyses conducted for result robustness. Results Following a median follow-up period of 69 months, each standard deviation (SD) increase in SADHtR was consistently associated with a higher risk of all-cause mortality across three models, yielding a hazard ratio (HR) and 95% confidence interval (CI) of 1.51(1.29,1.76) in model 3. Additionally, compared to the first tertile of SADHtR, the third tertile exhibited a higher risk for all-cause mortality, with HRs(95%CIs) of 1.58(1.25,2.01) in model 1, 2.01(1.33,3.02) in model 2, and 1.74(1.19,2.57) in model 3. Notably, subgroup analysis revealed persistent positive associations between SADHtR and all-cause mortality among subgroups based on age-at-risk ( |
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