[Table/Fig-1]:

Baseline characteristics and co-morbidities of two groups

Characteristics	Study group				p-value
	Case (n=144)		Control (n=144)
	n	%	n	%
Gender
Male	74	51.4	78	54.2
Female	70	48.6	66	45.8	0.637
Smoke
+	56	38.9	47	32.6	0.269
-	88	61.1	97	67.4
Alcohol
+	32	22.2	37	25.7	0.490
-	112	77.8	107	74.3
Diabetes Mellitus
+	39	27.1	33	22.9	0.414
-	105	72.9	111	77.1
COPD*
+	34	23.6	27	18.8	0.313
-	110	76.4	117	81.2
Ischemic heart disease
+	28	19.4	22	15.3	0.351
-	116	80.6	122	84.7
Hypertension
+	49	34.0	52	36.1	0.711
-	95	64.0	92	63.9
BPH†
+	19	13.2	19	13.2	-
-	125	86.8	125	86.8
Urinary stone
+	14	9.7	11	7.6	0.530
-	130	90.3	133	92.4

*Chronic obstructive pulmonary diseases, ^† Benign prostatic hypertrophia