title: Sex-specific characteristics of anthropometry in patients with obstructive sleep apnea: neck circumference and waist-hip ratio.
abstract: OBJECTIVE
  This study aimed to investigate the sex-specific effects of anthropometric profiles on the occurrence and severity of obstructive sleep apnea (OSA).
  
  
  METHODS
  We evaluated 151 patients with suspected OSA undergoing polysomnography and anthropometric measurements such as body mass index (BMI), neck and waist circumference (NC and WC), and waist-hip ratio (WHR).
  
  
  RESULTS
  In men, NC (P = .006), WC (P = .035), and WHR (P = .003) were significantly increased in OSA and all were significantly correlated with apnea hypopnea index (AHI). However, in female OSA patients, BMI (P = .05), WC (P = .008), and WHR (P = .001) were elevated, but only WHR was significantly correlated with AHI. Correlation analyses showed significant correlations between NC and other anthropometric indexes in men but not in women. The receiver operating characteristic curves revealed that NC and WHR in men, and WHR in women, were significant in both model I (AHI > or = 5) and model 2 (AHI > or = 15).
  
  
  CONCLUSIONS
  Waist-hip ratio is the most reliable correlate of OSA in both sexes. Neck circumference is an independent risk factor for male, but not for female, OSA patients. These different aspects of obesity may contribute to the pathogenesis of OSA and provide helpful guidance in the screening of OSA.
authors.forename: Young-Hyo
authors.initials: YH
authors.lastname: Lim
authors.forename: Jihye
authors.initials: J
authors.lastname: Choi
authors.forename: Kyung Rae
authors.initials: KR
authors.lastname: Kim
authors.forename: Jinho
authors.initials: J
authors.lastname: Shin
authors.forename: Kyung Gyun
authors.initials: KG
authors.lastname: Hwang
authors.forename: Seungho
authors.initials: S
authors.lastname: Ryu
authors.forename: Seok Hyun
authors.initials: SH
authors.lastname: Cho
mesh_terms: D000328:Adult; D000368:Aged; D015992:Body Mass Index; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009333:Neck / Q000033:anatomy & histology*; D009765:Obesity / Q000150:complications* / Q000473:pathology; D011237:Predictive Value of Tests; D012372:ROC Curve; D012307:Risk Factors; D012720:Severity of Illness Index; D012737:Sex Factors; D020181:Sleep Apnea, Obstructive / Q000175:diagnosis / Q000209:etiology*; D049629:Waist-Hip Ratio; D055815:Young Adult