A Multinational Study Comparing the Long-term Efficacy and Safety of Two Medicines, Solifenacin Succinate and Mirabegron Taken Together, or Separately, in Subjects With Symptoms of Overactive Bladder

Inclusion Criteria: Main Inclusion at Screening (Visit 1): * Subject had completed study 178-CL-101 or study 905-EC-012 (This inclusion criterion would no longer apply once the recruitment for study 178-CL-101 and study 905-EC-012 had been completed. In that case the subject had to have symptoms of "wet" OAB (urinary frequency and urgency with incontinence) for at least 3 months); * Subject was willing and able to complete the micturition diary and questionnaires correctly and able to measure his/her vital signs at home at stipulated time points, using the device provided by the study personnel, and to adequately record the readings; Main Inclusion at Randomization (Visit 2): * Subject had a micturition frequency of on average ≥ 8 times per 24-hour period during the last 7 days of the micturition diary period (incontinence episode should not be counted as a micturition). * Subject had experienced at least 3 incontinence episodes during the last 7 days of the micturition diary period. * Subject had experienced on average at least 1 urgency episode (grade 3 or 4 on Patient Perception of Intensity of Urgency Scale \[PPIUS\]) per 24-hour period during the 7-day micturition diary period. Exclusion Criteria: Main Exclusion at Screening (Visit 1): * Subject had clinically significant bladder outflow obstruction at risk of urinary retention; * Subject had significant PVR volume (\> 150 mL); * Subject had significant stress incontinence or mixed stress/urgency incontinence wher…