title: Prospective assessment of the risk of obstructive sleep apnea in patients attending a tertiary health facility in Sub-Saharan Africa.
abstract: BACKGROUND
  The impact of Obstructive sleep apnea (OSA) in worsening outcomes is profound, especially in the presence of comorbid conditions. This study aimed to describe the proportion of patients at a high risk of OSA in our practice setting.
  
  
  METHODS
  The STOP BANG questionnaire and the Epworth Sleepiness scale were used to assess for OSA risk and excessive daytime sleepiness respectively. Hospitalized patients and out-patients were recruited. Intergroup differences in continuous variables were compared using the analysis of variance. The proportion of patients with high risk of OSA and excessive daytime sleepiness was presented as frequencies and group differences compared with the Pearson χ(2) test. Independent risk predictors for OSA were assessed in multivariate logistic regression analysis.
  
  
  RESULTS
  A total of 1100 patients (53.4% females) participated in the study. Three hundred and ninety nine (36.3%) had a high risk of OSA, and 268 (24.4%) had excessive daytime sleepiness. Of the participants with high OSA risk, 138 (34.6%) had excessive daytime sleepiness compared to 130 (18.5%) of those with low OSA risk (p).
  
  
  CONCLUSIONS
  A significant proportion of patients attending our tertiary care center are at high risk of OSA.
authors.affiliation: Departments of Medicine, Faculty of Clinical Sciences, College of Medicine, University of Lagos, Lagos State, Nigeria.
authors.forename: Obianuju Beatrice
authors.initials: OB
authors.lastname: Ozoh
authors.affiliation: Departments of Medicine, Faculty of Clinical Sciences, College of Medicine, University of Lagos, Lagos State, Nigeria.
authors.forename: Njideka Ulunma
authors.initials: NU
authors.lastname: Okubadejo
authors.affiliation: Departments of Medicine, Faculty of Clinical Sciences, College of Medicine, University of Lagos, Lagos State, Nigeria.
authors.forename: Ayesha Omolara
authors.initials: AO
authors.lastname: Akinkugbe
authors.affiliation: Departments of Medicine, Faculty of Clinical Sciences, College of Medicine, University of Lagos, Lagos State, Nigeria.
authors.forename: Oluwadamilola Omolara
authors.initials: OO
authors.lastname: Ojo
authors.affiliation: Departments Surgery, Faculty of Clinical Sciences, College of Medicine, University of Lagos, Lagos State, Nigeria.
authors.forename: Chinyere Nkiru
authors.initials: CN
authors.lastname: Asoegwu
authors.affiliation: Departments of Medicine, Faculty of Clinical Sciences, College of Medicine, University of Lagos, Lagos State, Nigeria.
authors.forename: Casmir
authors.initials: C
authors.lastname: Amadi
authors.affiliation: Departments of Medicine, Faculty of Clinical Sciences, College of Medicine, University of Lagos, Lagos State, Nigeria.
authors.forename: Ifedayo
authors.initials: I
authors.lastname: Odeniyi
authors.affiliation: Departments of Medicine, Faculty of Clinical Sciences, College of Medicine, University of Lagos, Lagos State, Nigeria.
authors.forename: Amam Chinyere
authors.initials: AC
authors.lastname: Mbakwem
mesh_terms: D000328:Adult; D017954:Africa South of the Sahara / Q000453:epidemiology; D003430:Cross-Sectional Studies; D006970:Disorders of Excessive Somnolence / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009549:Nigeria / Q000453:epidemiology; D015995:Prevalence; D011446:Prospective Studies; D020181:Sleep Apnea, Obstructive / Q000453:epidemiology*; D011795:Surveys and Questionnaires; D062606:Tertiary Care Centers
keywords: Nigeria; Obstructive sleep apnea; excessive day time sleepiness; tertiary hospital