Simplifying STOP-BANG: use of a simple questionnaire to screen for OSA in an Asian population
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We aim to assess the utility of a simple-to-use 8-point questionnaire in screening for moderate–severe obstructive sleep apnea (OSA) and to assess the validity of cutoffs used to score body mass index (BMI) in this questionnaire.
Patients undergoing diagnostic polysomnography (PSG) were asked to fill in a questionnaire with a simple dichotomized 8-point questionnaire, represented by the mnemonic STOP-BANG. A score of 3 or more out of a possible 8 was taken to indicate high risk for presence of OSA. These were then evaluated versus results from the overnight, monitored PSG.
Three hundred and forty-eight patients underwent overnight diagnostic PSG, of whom 319 (91.2%) completed the questionnaire. Seventy-four (22.7%) were classified as being at low risk of OSA and 252 (77.3%) were classified as being high risk. The sensitivities of the STOP-BANG screening tool for an AHI of >5, >15, and >30 were 86.1%, 92.8%, and 95.6%, respectively, with negative predictive values of 84.5% and 93.4% for moderate and severe OSA, respectively. Using cutoffs of 30 or 35 for scoring the BMI did not significantly change the performance of the screening tool.
STOP-BANG is a clinically useful tool with high sensitivity that can be used to screen patients for moderate and severe OSA. Using cutoffs of 30 for BMI, 40 cm for neck circumference, and 50 years for age simplifies the application of the tool without affecting performance.
KeywordsScreening Obstructive sleep apnea Asian population Body mass index
- 8.Collop NA, Anderson WM, Boehlecke B, Claman D, Goldberg R, Gottlieb DJ, Hudgel D (2007) Clinical guidelines for the use of unattended portable monitors in the diagnosis of obstructive sleep apnea in adult patients. Portable Monitoring Task Force of the American Academy of Sleep Medicine. J Clin Sleep Med 3:737–747PubMedGoogle Scholar
- 17.Rechtschaffen A, Kales A (1968) A manual of standardized terminology, techniques and scoring system for sleep stages of human subjects. National Institutes of Health, Washington, DCGoogle Scholar
- 18.Department of Statistics (ed) (2009) Yearbook of statistics Singapore. Ministry of Trade & Industry, Republic of SingaporeGoogle Scholar
- 20.Abrishami A, Khajehdehi A, Chung F (2010) A systematic review of screening questionnaires for obstructive sleep apnea. Can J Anaesth Feb 9 2010 epub before print Google Scholar
- 27.World Health Organization (ed) (2000) Obesity: preventing and managing the global epidemic. World Health OrganizationGoogle Scholar