Table 2.

Comorbidities of patients with idiopathic sudden sensorineural hearing loss (ISSNHL) and patients with non-idiopathic sudden sensorineural hearing loss (NISSNHL)

Patients´ characteristics	All patients		NISSNHL		ISSNHL
	N	%	N	%	N	%	p
Smoking
Yes	93	16.2	20	23.8	73	14.9	0.117
No	471	82.1	63	75	408	83.3
n.a	10	1.7	1	1.2	9	1.8
Coronary heart disease
Yes	68	11.5	11	13.1	57	11.6	0.601
No	503	87.6	72	85.7	431	88
n.a	3	0.5	1	1.2	2	0.4
Diabetes
Yes	92	16	16	19	76	15.5	0.414
No	482	84	68	81	414	84.5
Hypercholesterolemia
Yes	76	13.2	13	15.5	63	12.9	0.755
No	493	85.9	70	83.3	423	86.3
n.a	5	0.9	1	1.2	4	0.8
Arterial hypertension
Yes	319	55.6	48	57.1	271	55.3	0.754
No	255	44.4	36	42.9	219	44.7
Comorbidity
Yes	187	67.2	30	35.7	157	32	0.742
No	386	32.6	54	64.3	332	67.8
n.a	1	0.2	0	0	1	0.2

n.a. not available