Figure 1. Graphic representation of all areas under the curve obtained for the Portuguese-language version of the STOP-Bang questionnaire, culturally adapted for use in Brazil (n = 456). Obstructive sleep apnea (OSA) was classified, based on the apnea-hypopnea index, as follows: ≥ 5 events/h = OSA (any degree); ≥ 15 events/h = moderate/severe OSA; and ≥ 30 events/h = severe OSA.
