STOP-Bang Questionnaire: A Practical Approach to Screen for Obstructive Sleep Apnea

Chest. 2016 Mar;149(3):631-8. doi: 10.1378/chest.15-0903. Epub 2016 Jan 12.


There exists a high prevalence of OSA in the general population, a great proportion of which remains undiagnosed. The snoring, tiredness, observed apnea, high BP, BMI, age, neck circumference, and male gender (STOP-Bang) questionnaire was specifically developed to meet the need for a reliable, concise, and easy-to-use screening tool. It consists of eight dichotomous (yes/no) items related to the clinical features of sleep apnea. The total score ranges from 0 to 8. Patients can be classified for OSA risk based on their respective scores. The sensitivity of STOP-Bang score ≥ 3 to detect moderate to severe OSA (apnea-hypopnea index [AHI] > 15) and severe OSA (AHI > 30) is 93% and 100%, respectively. Corresponding negative predictive values are 90% and 100%. As the STOP-Bang score increases from 0 to 2 up to 7 to 8, the probability of moderate to severe OSA increases from 18% to 60%, and the probability of severe OSA rises from 4% to 38%. Patients with a STOP-Bang score of 0 to 2 can be classified as low risk for moderate to severe OSA whereas those with a score of 5 to 8 can be classified as high risk for moderate to severe OSA. In patients whose STOP-Bang scores are in the midrange (3 or 4), further criteria are required for classification. For example, a STOP-Bang score of ≥ 2 plus a BMI > 35 kg/m(2) would classify that patient as having a high risk for moderate to severe OSA. In this way, patients can be stratified for OSA risk according to their STOP-Bang scores.

Keywords: obstructive sleep apnea; perioperative care; screening questionnaire; sleep-disordered breathing.

MeSH terms

  • Age Factors
  • Bicarbonates / blood
  • Body Mass Index
  • Comorbidity
  • Fatigue / epidemiology*
  • Humans
  • Hypertension / epidemiology*
  • Mass Screening
  • Neck / anatomy & histology*
  • Obesity / epidemiology*
  • Organ Size
  • Polysomnography
  • Preoperative Care
  • Sensitivity and Specificity
  • Severity of Illness Index
  • Sex Factors
  • Sleep Apnea, Obstructive / blood
  • Sleep Apnea, Obstructive / diagnosis*
  • Sleep Apnea, Obstructive / epidemiology
  • Snoring / epidemiology*
  • Surveys and Questionnaires


  • Bicarbonates