Table 2.

Multivariate stepwise logistic regression analyses models for different factors that contribute to tinnitus suppression.

Independent variables	Odds ratio	95%	p value
		Confidence interval
Age (yrs)
<30	0.24	0.06–1.07	p = 0.061
31–50	0.48	0.14–1.69	p = 0.255
51–70	0.29	0.08–1.12	p = 0.072
>70	1
Gender
Female	1
Male	1.57	0.88–2.76	p = 0.122
Tinnitus laterality
Left ear	1
Right ear	0.81	0.36–1.81	p = 0.602
Bilateral	0.85	0.45–1.60	p = 0.613
Ringing in the head	1.63	0.62–4.31	p = 0.324
Hearing level
Normal hearing	3.25	2.01–5.27	p = 0.001
Sensorineural hearing loss	1
Duration of tinnitus
>5 yrs	1
2 yrs < x ≤ 5 yrs	1.52	0.70–3.10	p = 0.441
1 yr < x ≤ 2 yrs	1.61	0.82–3.20	p = 0.731
≤1 yrs	2.77	1.48–5.19	p = 0.002
Sleep
Sleep disturbance	1
Without sleep disturbance	2.51	1.56–4.10	p = 0.005