Table 2. Adjusted odds ratios obtained by multivariate analysis for each item of the Portuguese-language version of the STOP-Bang questionnaire.^a .

STOP-Bang item	OSA severity
	Any	p	Moderate/severe	p	Severe	p
	AHI ≥ 5 events/h		AHI ≥ 15 events/h		AHI ≥ 30 events/h
	(n = 357)		(n = 237)		(n = 130)
Snoring (loud)	1.420 (0.851-2.369)	0.179	1.666 (1.063-2.610)	0.026	1.706 (0.964-3.021)	0.066
Tiredness	0.971 (0.585-1.612)	0.912	1.199 (0.787-1.828)	0.397	1.515 (0.926-2.475)	0.097
Observed apnea	2.044 (1.182-3.546)	0.010	1.897 (1.233-2.923)	0.004	4.016 (2.415-6.622)	< 0.001
Pressure (hypertension)	1.680 (0.911-3.095)	0.096	1.650 (1.039-2.617)	0.034	1.745 (1.047-2.915)	0.033
BMI (> 35 kg/m2)	1.364 (0.711-2.617)	0.350	1.222 (0.718-2.079)	0.458	2.008 (1.103-3.649)	0.023
Age (> 50 years)	2.227 (1.193-4.166)	0.012	2.132 (1.308-3.472)	0.002	2.016 (1.184-3.436)	0.010
NC (> 40 cm)	3.134 (1.712-5.747)	< 0.001	2.347 (1.445-3.816)	0.001	1.869 (1.055-3.311)	0.032
Gender (male)	1.663 (0.934-2.958)	0.083	1.644 (0.993-2.724)	0.053	2.392 (1.265-4.524)	0.007

OSA: obstructive sleep apnea; AHI: apnea-hypopnea index; BMI: body mass index; and NC: neck circumference. ^aValues are presented as adjusted OR (95% CI).