Table 2.

Association between the characteristics of the upper airway structure and severity of OSA in the regression model.

Dependent variable	Independent variable	B	P	OR (95% CI)
Moderate	BMI	0.126	0.000	1.134 (1.061–1.213)
and severe	Neck circumstance	0.105	0.004	1.111 (1.035–1.192)
OSA	Tonsillar hypertrophy	1.984	0.007	7.274 (1.708–30.976)
	Tongue base hypertrophy	0.617	0.005	1.854 (1.204–2.856)
	Mandibular recession	0.693	0.000	2.000 (1.397–2.866)

OSA, obstructive sleep apnea; BMI, body mass index; OR, odds ratio; RG, retroglottal; RP, retropalate; CI, confidence interval.