Validation of a Portuguese version of the STOP-Bang questionnaire as a screening tool for obstructive sleep apnea: Analysis in a sleep clinic
R.. Reisa,, , F.. Teixeirab, V.. Martinsb, L.. Sousab, L.. Batatab, C.. Santosb, J.. Moutinhob
a Respiratory Department, Centro Hospitalar de Tr??s-os-Montes e Alto Douro, Portugal
b Sleep Medicine Center, Centro Hospitalar e Universit??rio de Coimbra, Portugal
Abstract
Introduction

Screening methods have become increasingly important owing to the growing number of patients suspected of obstructive sleep apnea (OSA) being referred for sleep consultation. The STOP-Bang questionnaire has been validated as a screening tool for OSA in surgical patients.

Objectives

To evaluate the performance of a Portuguese version of the STOP-Bang questionnaire for the diagnosis of OSA in a sleep clinic.

Methods

Prospectively, for 2 months, all patients referred to our clinic for clinical evaluation completed a translated version of the STOP-Bang questionnaire in Portuguese and underwent a sleep study.

Results

We observed 216 patients and 215 (99.5%) were included. Age was 53.63 ± 13.10 years, 63.3% were male patients, neck circumference was 40.4 ± 44.11 cm and BMI was 29.41 [26.85; 33.06] kg/m2. OSA was present in 78% of the patients, of whom, 33% had moderate and 37% had severe OSA. A STOP-Bang score ≥3 had a sensitivity and positive predictive value (PPV) for OSA of 93.4% and 86.6%, respectively. Each increase in the STOP-Bang score was associated with an increase in the probability of OSA and severe OSA; reaching a 95% OSA probability, for a score of 6, and a 73% severe OSA probability, for a score of 8. A score of 3 and 2 had a negative predictive value for moderate/severe OSA of 85.3% and 91.7%, respectively.

Conclusions

The STOP-Bang questionnaire showed high sensitivity and PPV for OSA with the probability of severe OSA steadily increasing, the higher the scores. Furthermore, a low score showed high predictive value for the exclusion of moderate/severe OSA. The STOP-Bang questionnaire can be a powerful tool for stratifying patients in the diagnosis of OSA.

Keywords
STOP-Bang questionnaire, Obstructive sleep apnea, Screening, Diagnosis

Metrics

  • Impact Factor: 1.560(2016)
  • 5-years Impact Factor: 1,100
  • SCImago Journal Rank (SJR):0,29
  • Source Normalized Impact per Paper (SNIP):0,685