Overview of published population-based studies assessing the prevalence of overactive bladder (OAB*) among both sexes (MEDLINE and PubMed search to December 2006) with present study (in chronological order)

*OAB, overactive bladder; UTI, urinary tract infection†In the European study, in five out of six countries, telephone interview was used (excluding Spain where direct interviews were conducted due to lower proportion of households having telephone)‡Out of 11,740 participants (of 17,231 households contacted), 5,539 were considered ineligible. To calculate response rate, the number of respondents was divided by eligible participants (the former response rate). If same proportion of non-participants, as there were ineligible among participants (47%), were also considered ineligible, response rate was greater (the latter response rate).§Study sample was close to representative of the general population regarding age, and/or age-standardization was used.