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Table 2 Correlations of OSA severity with clinical characteristics

From: Sleep apnea predicts distinct alterations in glucose homeostasis and biomarkers in obese adults with normal and impaired glucose metabolism

  All (n = 45) Women (n = 36) Men+ (n = 9) All NGM (n = 30) Women NGM (n = 21) Women IGM (n = 15)
AHI with:       
   male sex 0.49** -- -- 0.59** -- --
   BMI 0.29 0.29 -0.42 0.33 0.32 0.16
   neck circumference 0.56** 0.53** -0.02 0.57** 0.57* 0.47
   waist circumference 0.46** 0.35* -0.15 0.54** 0.41 0.19
   sagittal abd. diameter 0.32* 0.42* -0.39 0.48* 0.70** -0.04
   insulin 0.51** 0.49** 0.71* 0.63** 0.50* 0.48
   HOMA-IR 0.47** 0.44* 0.72* 0.54** 0.48* 0.35
   HOMA-B 0.43* 0.35* 0.71* 0.63** 0.64** -0.10
   HOMA-IS -0.47** -0.45* -0.67 -0.55** -0.48* 0.36
   leptin -0.39* -0.24 -0.15 -0.46* -0.22 -0.23
   adiponectin -0.25 -0.16 -0.15 -0.46* -0.36 0.15
LowSaO 2 with:       
   TNF-α -0.29 -0.35* -0.22 -0.31 -0.44* -0.13
   sTNFαR2 -0.23 -0.34* -0.001 -0.18 -0.47* -0.28
   IL-6 -0.20 -0.18 -0.66 -0.01 0.19 -0.55*
  1. The Pearson product-moment correlation coefficients and Spearman's rank correlation coefficients. NGM, normal glucose metabolism; IGM, impaired glucose metabolism; AHI, apnea-hypopnea index; LowSaO 2 , mean low oxyhemoglobin saturation during sleep.
  2. *P < 0.05; **P < 0.005
  3. +Men with NGM only