Table 3. A logistic and linear regression analysis to identify the significance of anthropometric indexes for the presence and the severity of OSA.

	Presence of OSA		AHI
	OR (95% CI)	P value	β	SE	P value
Body mass index	1.364 (1.22–1.53)	<0.001	3.082	0.304	<0.001
Neck circumference	1.414 (1.24–1.62)	<0.001	3.748	0.412	<0.001
Waist circumference	1.114 (1.07–1.16)	<0.001	1.272	0.116	<0.001

Adjusted for age, sex, alcohol consumption, and smoking, OSA, Obstructive sleep apnea; AHI, apnea-hypopnea index, OR, odds ratio; β, standardized regression coefficient; SE, standard error; CI, confidence interval.