[Diagnostic accuracy of STOP-Bang questionnaire on moderate sleep apnoea in primary care]

Gac Sanit. 2019 Sep-Oct;33(5):421-426. doi: 10.1016/j.gaceta.2018.05.003. Epub 2018 Jul 20.
[Article in Spanish]


Objective: We aimed to compare the diagnostic utility of the STOP-Bang questionnaire for moderate apnoea against the gold standard (type I polysomnography) in a primary care setting.

Method: Study of diagnostic utility in primary care. Estimated sample: 85 cases and 85 healthy controls. In convenience sampling, 203 patients were recruited by their physicians at six health centres. Twenty-five were excluded, and 57 women and 121 men, of whom 74 had apnoea-hypopnoea index (AHI) ≥15, were analyzed. STOP-Bang was validated by comparing scores in the same patient with the apnoea-hypopnoea index observed in polysomnography, as a gold standard. Sample size, ROC curve analysis and optimal cut-off points were identified with the easyROC, pROC, and OptimalCutpoints packages.

Results: The area under the curve in moderate apnoea (AHI ≥15) of the STOP-Bang was 0.777 (0.667-0.808), with optimal cut-off points different by sex (4 in women and 6 in men). In the cross-validation with k=10, the area under the curve for the STOP-Bang was 0.678.

Conclusions: The STOP-Bang presents a diagnostic moderate utility for AHI≥15, but superior to other scales, in a community population. Its performance is more appropriate in women.

Keywords: Apnea del sueño; Atención primaria; Diagnostic utility; Gender; Primary care; STOP-Bang; Sexo; Sleep apnoea; Utilidad diagnóstica.

Publication types

  • Multicenter Study
  • Validation Study

MeSH terms

  • Adult
  • Aged
  • Area Under Curve
  • Confidence Intervals
  • Cross-Sectional Studies
  • False Negative Reactions
  • False Positive Reactions
  • Female
  • Humans
  • Hypertension / complications
  • Male
  • Middle Aged
  • Polysomnography
  • Primary Health Care / methods*
  • ROC Curve
  • Self Report
  • Sleep Apnea Syndromes / complications
  • Sleep Apnea Syndromes / diagnosis*
  • Surveys and Questionnaires*