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Table 1 Demographic and polysomnographic profile of subjects

From: Waist-hip ratio is an independent predictor of moderate-to-severe OSA in nonobese males: a cross-sectional study

  Obesity BMI ≥ 28 kg/m2 Non-obese BMI < 28 kg/m2 p-value F
(A) WHR ≥ 0.9 (B) WHR < 0.9 (C) WHR ≥ 0.9 (D) WHR < 0.9
AHI (h) 38.1 ± 27.4 38.5 ± 18.9 23.4 ± 16.0*** 21.5 ± 15.2***#  < 0.01 11.60
AI (h) 15.4 ± 25.0 15.9 ± 16.2 10.0 ± 13.9 9.8 ± 13.5 0.16 1.77
HI (h) 22.7 ± 18.6 22.7 ± 8.8 13.3 ± 9.1*** 12.0 ± 9.0***#  < 0.01 12.07
LSPO2 (%) 76.2 ± 11.4 81.3 ± 5.6 83.3 ± 9.3*** 85.1 ± 7.5***  < 0.01 12.35
ODI (h) 39.7 ± 29.1 32.0 ± 17.9 17.3 ± 15.0*** 15.6 ± 15.8***  < 0.01 21.40
AI/HI 2.1 ± 5.4 0.87 ± 1.30 2.37 ± 9.64 3.03 ± 0.01 0.87 0.24
ESS 6.3 ± 5.3 5.9 ± 4.4 7.2 ± 5.1 7.1 ± 4.3 0.64 12.93
Height (cm) 175.4 ± 11.9 176.3 ± 9.2 171.3 ± 6.2 172.4 ± 6.6 0.02 3.45
Weight (kg) 133.5 ± 30.0 106.2 ± 32.7 67.1 ± 7.1 70.8 ± 10.6  < 0.01 188.17
WC (cm) 129.0 ± 18.0 104.8 ± 14.6 90.7 ± 5.1 85.6 ± 7.7  < 0.01 212.06
HC (cm) 127.7 ± 21.3 121.3 ± 19.9 95.8 ± 5.5 99.1 ± 6.6  < 0.01 91.89
WHR 1.04 ± 0.30 0.87 ± 0.04 0.95 ± 0.04 0.86 ± 0.03  < 0.01 19.01
Age (y) 30.24 ± 0.99 39.75 ± 3.61 50.49 ± 1.69 43.41 ± 1.24  < 0.0001 28.76
  1. *** indicated p < 0.001 versus group A; # indicated p < 0.05 versus group B