Table 1. Comparisons of baseline characteristics, symptom scores between control and cases.

Parameters	Control (n=124)	Cases (n=169)	p-Value
Age (years)	44.6±12.3	44.0±13.7	0.90
Q1 (urinary frequency)	0.5±0.6	1.7±.9	<0.01
Q2 (urgency)	0.3±0.6	1.4±1.0	<0.01
Q3 (dysuria)	0.1±0.30	1.5±1.1	<0.01
Q4 (sense of incomplete emptying)	0.2±0.5	1.4±1.0	<0.01
Q5 (lower abdominal discomfort)	0.2±0.4	1.1±1.0	<0.01
Q6 (low back pain)	0.1±0.4	0.7±1.0	<0.01
Q7 (hematuria)	0.04±0.2	0.9±1.1	<0.01
Total Score	1.4±2.4	8.9±4.6	<0.01