The null hypothesis for this study is that the combination of solifenacin and Percutaneous Tibial Nerve Stimulation (PTNS) is not different from PTNS alone.  However the investigators anticipate a 20% improvement in patients receiving combination therapy as measured by the OAB-q (Overactive Bladder questionnaire) scores. 

history of any illness (including psychiatric) that, in the opinion of the investigator, might confound the results of the study or pose additional risk to the subject

known hypersensitivity to solifenacin

participation in any investigational or marketed drug trial within the 30 days prior to the first dose of study drug or any time during the study period

pregnancy or trying to become pregnant

breast-feeding

Contacts and Locations

Choosing to participate in a study is an important personal decision.  Talk with your doctor and family members or friends about deciding to join a study. 
To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. 
For general information, see Learn About Clinical Studies. 

Please refer to this study by its ClinicalTrials.gov identifier: NCT01764893