Table 2.

Distribution of students' tinnitus status according to their biodemographic data.

Students' biodemographic data		Tinnitus				P
		Negative		Positive
		No.	%	No.	%
Age in years	20−	145	77.5	42	22.5	0.003∗
	23−	127	69.0	57	31.0
	25+	14	48.3	15	51.7
Gender	Male	141	66.2	72	33.8	0.012∗
	Female	145	77.5	42	22.5
Smoking	Yes	24	77.4	7	22.6	0.447
	No	262	71.0	107	29.0
Regular medications intake	No	253	73.1	93	26.9	0.069
	Yes	33	61.1	21	38.9
Have any allergy	No	232	75.8	74	24.2	0.001∗
	Yes	54	57.4	40	42.6
Illness, do you have or have you had?	None	267	74.2	93	25.8	0.001∗
	Cardiac disorder	3	42.9	4	57.1
	Head injury	1	9.1	10	90.9
	DM	2	50.0	2	50.0
	Others	13	72.2	5	27.8
Have hearing problem?	Yes	16	50.0	16	50.0	0.005∗
	No	270	73.4	98	26.6
In which ear do you have problems with your hearing?	Right	5	41.7	7	58.3	0.607
	Left	4	66.7	2	33.3
	Both	7	50.0	7	50.0
Age of ear problem	Before age of 20 years	9	69.2	4	30.8	0.072
	After age of 20 years	7	36.8	12	63.2
Onset of the hearing problem	Gradual	9	60.0	6	40.0	0.102
	Sudden	6	60.0	4	40.0
	Fluctuating	1	14.3	6	85.7
History of ear infection	Yes	22	51.2	21	48.8	0.007∗
	No	212	73.4	77	26.6
	Don't know	52	76.5	16	23.5
Ever had 3 or more ear infections	Yes	9	52.9	8	47.1	0.982
	No	12	50.0	12	50.0
	Don't know	1	50.0	1	50.0
Received successful treatment for ear infection	Yes	4	36.4	7	63.6	0.064
	No	5	83.3	1	16.7
History of ear surgery	Yes	8	66.7	4	33.3	0.706
	No	278	71.6	110	28.4
If yes, side of surgery	Right	2	100.0	0	0.0	0.519
	Left	1	50.0	1	50.0
	Bilateral	5	62.5	3	37.5

^∗ P < 0.05 (significant).