Table 1. The prevalence of overactive bladder in conducted population-based studies.

Variable	Korea [6]	Finland [2]	Europe and Canada [3]	United States [4]	Japan [5]
No. of respondents	2,000	3,727	19,165	5,204	4,570
Response rate (%)	22.1	62.4	33.0	44.3	45.3
Age distribution (y)	≥18	18-79	≥18	≥18	40-100
Survey method	Telephone survey	Postal survey	Telephone survey	Telephone survey	Postal survey
Prevalence of OAB (%)
Men	10.0	6.5	10.8	16.0	14.0
Women	14.3	9.3	12.8	16.9	11.0
Overall	12.2	8.0	11.8	16.5	12.4