title: Correlation of cephalometric and anthropometric measures with obstructive sleep apnea severity.
abstract: BACKGROUND
  Patients with obstructive sleep apnea-hypopnea syndrome (OSAHS) often have associated changes in craniofacial morphology and distribution of body fat, either alone or in combination.
  
  
  OBJECTIVE
  To correlate cephalometric and anthropometric measures with OSAHS severity by using the apnea-hypopnea index (AHI).
  
  
  METHODS
  A retrospective cephalometry study of 93 patients with OSAHS was conducted from July 2010 to July 2012. The following measurements were evaluated: body mass index (BMI), neck circumference (NC), waist circumference (WC), hip circumference (HC), the angles formed by the cranial base and the maxilla (SNA) and the mandible (SNB), the difference between SNA and SNB (ANB), the distance from the mandibular plane to the hyoid bone (MP-H), the space between the base of the tongue and the posterior pharyngeal wall (PAS), and the distance between the posterior nasal spine and the tip of the uvula (PNS-P). Means, standard deviations, and Pearson's correlation coefficients were calculated and analyzed.
  
  
  RESULTS
  AHI correlated significantly with BMI (r = 0.207, p = 0.047), NC (r = 0.365, p = 0.000), WC (r = 0.337, p = 0.001), PNS-P (r = 0.282, p = 0.006), and MP-H (r = 0.235, p = 0.023).
  
  
  CONCLUSIONS
  Anthropometric measurements (BMI, NC, and WC) and cephalometric measurements (MP-H and PNS-P) can be used as predictors of OSAHS severity.
authors.affiliation: Master's degree completed. Doctorate in progress. Adjunct Professor of Otolaryngology (Federal University of Piaui).
authors.forename: Paulo de Tarso M
authors.initials: Pde T
authors.lastname: Borges
authors.affiliation: Physician (Federal University of Piaui).
authors.forename: Edson Santos Ferreira
authors.initials: ES
authors.lastname: Filho
authors.affiliation: Doctoral degree completed. Adjunct Professor of Nursing (Federal University of Piaui).
authors.forename: Telma Maria Evangelista de
authors.initials: TM
authors.lastname: Araujo
authors.affiliation: Doctoral degree completed. Associate Professor of Chemistry (Federal University of Piaui).
authors.forename: Jose Machado Moita
authors.initials: JM
authors.lastname: Neto
authors.affiliation: Phonoaudiologist (Paulo Borges Clinic).
authors.forename: Nubia Evangelista de Sa
authors.initials: NE
authors.lastname: Borges
authors.affiliation: Physician (Federal University of Piaui).
authors.forename: Baltasar Melo
authors.initials: BM
authors.lastname: Neto
authors.affiliation: Doctoral degree completed. Associate Professor (Department of Parasitology and Microbiology, Federal University of Piaui).
authors.forename: Viriato
authors.initials: V
authors.lastname: Campelo
authors.affiliation: Doctoral degree completed. Associate Professor (Campinas State University (UNICAMP) School of Medicine).
authors.forename: Jorge Rizzato
authors.initials: JR
authors.lastname: Paschoal
authors.affiliation: Doctoral degree completed. Full Professor (Campinas State University (UNICAMP) School of Medicine).
authors.forename: Li M
authors.initials: LM
authors.lastname: Li
keywords: Abdominal Circumference; Anthropometry; Body Mass Index; Cephalometry; Obstructive; Sleep Apnea; Waist Circumference