title: [Role of sex and age as predictors of an apnea and hypopnea index higher than 5/hour in patients with normal body mass index using respiratory polygraphy].
abstract: BACKGROUND
  To establish whether predictors of sleep apnea (OSAHS) from patients with normal body mass index (BMI) could facilitate the prioritization of candidates for sleep tests. Aim To describe the role of sex and age as predictors of apnea and hypopnea index (AHI)>5 events per hour in patients with normal BMI (<25kg/m(2)).
  
  
  METHODS
  Retrospective study of patients referred for home respiratory polygraphy level iii.
  
  
  RESULTS
  One hundred and forty-three patients with BMI<25kg/m(2), of which 70 had OSA defined by an AHI>5/h were analyzed. The clinical variables to predict AHI>5/h in a multiple logistic regression model, found statistical significance for age>60 years (OR=5.67; 95% CI 2.38-13.53; P<.0001) and male (OR=3.15; 95% CI 1.47-6.73; P<.003).
  
  
  CONCLUSIONS
  Forty-eight point ninety-five percent of normal weight patients in a population at risk had OSAHS defined by an AHI>5/h. The sex and age would be risk predictors in this population and most likely in men.
authors.affiliation: Servicio de Medicina Respiratoria, Hospital Británico de Buenos Aires, Buenos Aires, Argentina; Grupo Argentino de Investigación en Apneas del Sueño (GAIAS), Buenos Aires, Argentina. Electronic address: borsinieduardo@yahoo.com.ar.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Borsini
authors.affiliation: Servicio de Medicina Respiratoria, Hospital Británico de Buenos Aires, Buenos Aires, Argentina; Grupo Argentino de Investigación en Apneas del Sueño (GAIAS), Buenos Aires, Argentina.
authors.forename: Glenda
authors.initials: G
authors.lastname: Ernst
authors.affiliation: Servicio de Medicina Respiratoria, Hospital Británico de Buenos Aires, Buenos Aires, Argentina.
authors.forename: Martín
authors.initials: M
authors.lastname: Bosio
authors.affiliation: Servicio de Medicina Respiratoria, Hospital Británico de Buenos Aires, Buenos Aires, Argentina; Grupo Argentino de Investigación en Apneas del Sueño (GAIAS), Buenos Aires, Argentina.
authors.forename: Magali
authors.initials: M
authors.lastname: Blanco
authors.affiliation: Servicio de Medicina Respiratoria, Hospital Británico de Buenos Aires, Buenos Aires, Argentina.
authors.forename: Miguel
authors.initials: M
authors.lastname: Blasco
authors.affiliation: Servicio de Medicina Respiratoria, Hospital Británico de Buenos Aires, Buenos Aires, Argentina.
authors.forename: Alejandro
authors.initials: A
authors.lastname: Salvado
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015992:Body Mass Index; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D017286:Polysomnography; D012189:Retrospective Studies; D012307:Risk Factors; D020181:Sleep Apnea, Obstructive / Q000175:diagnosis* / Q000209:etiology
keywords: Factores de riesgo; Normal weight; Normopeso; Poligrafía respiratoria; Predictores; Predictors; Respiratory polygraphy; Risk factors