 - At least 2 nocturnal voids each night as documented in 2 diary periods during the screening. A mean of at least 8 daytime voids per day over 3 days with a minimum of at least 6 daytime voids each day as documented in 2 diary periods during the screening. At least 1 urgency episode each 24 hours as documented in 2 diary periods during the screening. Each diary period consists of 3 consecutive days, with at least 14 days between each period. 