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Comparative analysis of body mass index and obesity-related anthropometric indices for mortality prediction: a study of the Namwon and Dong-gu cohort in Korea
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Ye Rim Kim, Min-Ho Shin, Young-Hoon Lee, Seong-Woo Choi, Hae-Sung Nam, Jeong-Ho Yang, Sun-Seog Kweon
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Epidemiol Health. 2024;46:e2024066. Published online July 17, 2024
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DOI: https://doi.org/10.4178/epih.e2024066
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Abstract
OBJECTIVES
This study investigated the associations between several obesity-related anthropometric indices and mortality in middle-aged and elderly populations to compare the indices’ predictive ability with that of the body mass index (BMI).
METHODS We analyzed data on 12 indices calculated from 19,805 community-based cohort participants (average age, 63.27 years; median follow-up, 13.49 years). Each index was calculated using directly measured values of height, weight, waist circumference (WC), and hip circumference (HC). We calculated hazard ratios (HRs) and 95% confidence intervals (CIs) for each index using Cox regression and evaluated mortality prediction with the Harrell concordance index (c-index).
RESULTS Adding anthropometric indices to the basic mortality model (c-index, 0.7723; 95% CI, 0.7647 to 0.7799) significantly increased the predictive power of BMI (c-index, 0.7735; 95% CI, 0.7659 to 0.7811), a body shape index (ABSI; c-index, 0.7735; 95% CI, 0.7659 to 0.7810), weight-adjusted waist index (WWI; c-index, 0.7731; 95% CI, 0.7656 to 0.7807), and waist to hip index (WHI; c-index, 0.7733; 95% CI, 0.7657 to 0.7809). The differences between the BMI model and the other 3 models were not statistically significant.
CONCLUSIONS In predicting all-cause mortality, the ABSI, WWI, and WHI models based on WC or HC had stronger predictive power than conventional risk factors but were not significantly different from the BMI model.
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Summary
Korean summary
- 다수의 비만관련 신체계측지표들이 사망률을 유의하게 예측하였지만 체질량지수보다 통계적으로 우월하지는 않았다.
- 복부둘레가 고려된 비만지표들이 사망률예측에 더 유용할 것으로 추정된다.
Key Message
- Several obesity indices provided predictive value for all-cause mortality but were not superior to body mass index
- Obesity indices that take abdominal circumference into account are likely to be more useful for predicting mortality.
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Citations
Citations to this article as recorded by  - Accumulated subcutaneous fat in abdomen is associated with long COVID-19 symptoms among non-hospitalized patients: a prospective observational study
Tingxin Li, Baoming He, Yuping Liu, Chen Wang
Frontiers in Medicine.2024;[Epub] CrossRef
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