Liu et al reported the waist circumference to body mass index ratio as a prognostic tool for an obese adult. The authors are from Guangzhou Academy of Medical Science in China.
Parameters:
(1) waist circumference in cm
(2) body mass index (BMI) in kilograms per square meter
waist circumference to body mass index ratio =
= (waist circumference) / (body mass index)
Interpretation:
• Overall mortality and cardiovascular mortality increase as the ratio increases.
Quintile
Ratio
Overall Mortality per 1000 person years
1
2.99
7.47
2
3.30
8.30
3
3.48
11.12
4
3.65
14.80
5
3.93
27.84
Performance:
• The area under the ROC curve for the ratio as a predictor of cardiovascular mortality was 0.64.
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