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Table 4 HR with 95% CI of depression according to the China-specific criteria of obesity based on BMI and WC stratified by sexa

From: Obesity and the onset of depressive symptoms among middle-aged and older adults in China: evidence from the CHARLS

  Female Male
Crude HR (95% CI) Adjusted HR (95% CI) Crude HR (95% CI) Adjusted HR (95% CI)b
Female
 general obesity (BMI)
  Normal 1.000 1.000 1.000 1.000
  Underweight 1.099 (0.711~ 1.699) 1.089 (0.702~ 1.689) 1.048 (0.702~ 1.566) 1.058 (0.706~ 1.587)
  Overweight 0.906 (0.755~ 1.087) 0.879 (0.731~ 1.057) 0.792 (0.643~ 0.974)* 0.858 (0.693~ 1.063)
  Obese 0.982 (0.783~ 1.231) 0.906 (0.719~ 1.141) 0.514 (0.355~ 0.745)*** 0.506 (0.347~ 0.736)***
  -2Log likelihood 8508.942 8450.743 6953.708 6891.256
 Abdominal obesity (WC)
  Yes 0.948 (0.778~ 1.154) 0.917 (0.752~ 1.119) 0.721 (0.602~ 0.863)** 0.775 (0.644~ 0.933)**
  -2Log likelihood 8510.231 8452.458 6958.550 6899.773
  1. Note. aTests for trend were conducted using time-dependent Cox proportional hazards models, treating BMI and WC as categorical and dichotomous variables, respectively
  2. bAdjusted for age, marital status, education level, Hukou status (household registration), smoking, drinking, activities of daily living, and chronic disease
  3. *P < 0.05; **P < 0.01; and ***P < 0.001
  4. HR hazard ratio and CI confidence interval