Table 2.

The univariate logistic regression between personal factors and tinnitus among adolescents (n = 1003).

	Constant Tinnitus
	Odds Ratio	95% Confidence Interval	p-Value
Potential confounders
Gender (Male = 1; Female = 2)	0.660	(0.453–0.960)	0.030
Exposure to noise at home (1 = Little; 2 = Moderate; 3 = Much)	0.860	(0.629–1.177)	0.346
Exposure to noise at school (1 = Little; 2 = Moderate; 3 = Much)	0.892	(0.708–1.123)	0.331
Night sleep duration (per hour) (1 = ≤6 h; 2 = 6–8 h; 3 = ≥8 h)	0.874	(0.636–1.200)	0.405
Using earphones (per hour) (1 = ≤1 h; 2 = 1–3 h; 3 = ≥3 h)	1.182	(0.904–1.545)	0.222
Going out to noisy places (1 = 3 times a month or less; 2 = once a week or more)	1.489	(0.963–2.301)	0.073
Smoking status (0 = No; 1 = Yes)	1.044	(0.658–1.657)	0.854
Drugs use (0 = No; 1 = Yes)	2.461	(0.964–6.402)	0.065
Sedatives use (0 = No; 1 = Yes)	0.768	(0.343–1.720)	0.520
Head injury (0 = No; 1 = Yes)	1.141	(0.789.–1.651)	0.484
Ear infections (0 = No; 1 = Yes)	0.626	(0.406–0.964)	0.034
Anxiety or depression (0 = No; 1 = Yes)	1.077	(0.682–1.702)	0.750
Hypertension (0 = No; 1 = Yes)	1.234	(0.566–2.689)	0.596
Thyroid gland disorder (0 = No; 1 = Yes)	1.051	(0.779–1.418)	0.747
Sinus infection (0 = No; 1 = Yes)	0.846	(0.537–1.331)	0.469
Anemia (0 = No; 1 = Yes)	0.776	(0.177–3.400)	0.737