Table 3.

Crude and adjusted odds ratios (cOR and aOR) with 95% confidence intervals (CI) for obstructive sleep apnea by tension-type headache, depression, gender, body mass index and age

	cOR	95% CI	aOR	95% CI
Tension-type headache
0–11 days per year	Ref		Ref
12–179 days per year	0.50	(0.32–0.78)	0.95	(0.55–1.62)
≥180 days per year	1.11	(0.26–4.72)	1.91	(0.37–9.85)
Depression
No	Ref		Ref
Yes	0.93	(0.53–1.63)	1.12	(0.50–2.52)
Gender
Female	Ref		Ref
Male	2.49	(1.76–3.54)	2.76	(1.75–4.35)
Body mass index	1.13	(1.08–1.17)	1.15	(1.09–1.21)
Age	1.07	(1.05–1.08)	1.08	(1.05–1.10)