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Table 2 Hazard ratios (95% confidence intervals) for mortality according to WC categories by BMI categories, stratified by sex

From: Differential relationship between waist circumference and mortality according to age, sex, and body mass index in Koreans with age of 30–90 years; a nationwide health insurance database study

  BMI < 18.5 kg/m2 18.5 ≤ BMI < 23 23 ≤ BMI < 25 BMI ≥ 25
Men
 WC (cm)
  < 70 0.96 (0.83, 1.10) 0.78 (0.75, 0.82) 1.36 (1.11, 1.68) 1.24 (0.92, 1.69)
  70–75 0.98 (0.85, 1.13) 0.83 (0.80, 0.85) 1.02 (0.93, 1.12) 1.35 (1.11, 1.65)
  75–80 1.10 (0.95, 1.27) 0.86 (0.84, 0.88) 0.91 (0.87, 0.95) 1.11 (1.02, 1.22)
  80–85 1.12 (0.85, 1.48) 0.90 (0.88, 0.92) 0.93 (0.91, 0.96) 0.99 (0.95, 1.02)
  85–90 1 1 1 1
  90–95 0.98 (0.73, 1.32) 1.18 (1.13, 1.24) 1.17 (1.13, 1.20) 1.12 (1.09, 1.15)
  95–100 1.22 (0.74, 2.00) 1.40 (1.26, 1.55) 1.42 (1.35, 1.51) 1.30 (1.26, 1.34)
  ≥ 100 1.34 (0.43, 4.18) 1.33 (1.07, 1.64) 1.93 (1.70, 2.19) 1.83 (1.76, 1.90)
Women
 WC (cm)
  < 70 0.72 (0.64, 0.81) 0.96 (0.93, 1.00) 1.07 (0.94, 1.21) 1.53 (1.24, 1.88)
  70–75 0.78 (0.70, 0.88) 0.89 (0.86, 0.92) 0.95 (0.90, 1.01) 1.16 (1.05, 1.29)
  75–80 0.87 (0.76, 0.99) 0.91 (0.88, 0.94) 0.98 (0.94, 1.02) 0.98 (0.93, 1.03)
  80–85 1 1 1 1
  85–90 0.88 (0.71, 1.09) 1.14 (1.09, 1.21) 1.09 (1.04, 1.14) 1.06 (1.02, 1.10)
  90–95 0.88 (0.63, 1.25) 1.28 (1.17, 1.39) 1.26 (1.19, 1.34) 1.20 (1.15, 1.25)
  95–100 0.19 (0.06, 0.59) 1.44 (1.22, 1.70) 1.54 (1.37, 1.74) 1.37 (1.30, 1.43)
  ≥ 100 0.85 (0.32, 2.28) 2.00 (1.47, 2.72) 1.96 (1.54, 2.51) 1.85 (1.75, 1.96)
  1. Data are expressed as the hazard ratio (95% confidence interval)
  2. BMI category was classified into the four groups: low weight < 18.5 kg/m2, normal weight 18.5 ≤ BMI < 23 kg/m2, overweight 23 ≤ BMI < 25 kg/m2, and obesity BMI ≥ 25 kg/m2
  3. The hazard ratios (95% confidence intervals) were calculated by the Cox proportional hazards model with baseline age, alcohol, smoking and exercise status, BMI (as a continuous variable), BMI categories (4 groups), WC categories (8 groups), interaction between BMI categories and WC categories, FBS, total cholesterol, HDL-C, LDL-C, AST, ALT, and comorbidities, assessed by CCI