Assessment of Patient-reported Goal Attainment in the Treatment of Female Overactive Bladder

Inclusion Criteria: 1. Female aged ≥ 18 and ≤ 80 years 2. Symptoms of OAB as verified by the screening 3 day micturition diary, defined by: Mean urinary frequency ≥8 times/24 hours Mean number of urgency episodes ≥ 2 episode/24 hours 3. Symptoms of OAB for ≥ 3 months. 4. Ability and willingness to correctly complete the micturition diary and questionnaire 5. Capable of understanding and having signed the informed consent form after full discussion of the research nature of the treatment and its risks and benefits Exclusion Criteria: 1. Subjects with stress incontinence or mixed stress/urge incontinence where stress incontinence is the predominant component based on prior history. 2. Significant hepatic or renal disease, defined as having twice the upper limit of the reference range for serum concentrations of aspartate amino- transferase (AST \[SGOT\]), alanine aminotransferase (ALT \[SGPT\]), alkaline phosphatase or creatinine. 3. Any condition that is a contraindication for anticholinergic treatment, including uncontrolled narrow-angled glaucoma, urinary retention or gastric retention 4. Symptomatic acute urinary tract infection (UTI) during the run-in period 5. Recurrent UTI defined as having been treated for symptomatic UTI \> 4 times in the last year 6. Diagnosed or suspected interstitial cystitis 7. Clinically significant bladder outlet obstruction or poor detrusor function defined by clinical symptoms and investigator's opinion according to local standard of care 8. Previous history of major urethral and/or bladder surgery 9. History of radiation treatment (external or interstitial) to pelvic organs or external genitalia for any reason. 10. Subjects with neuropathology that could affect the lower urinary tract or nerve supply 11. Patients with marked cystocele or other clinically significant pelvic prolapse. 12. Subjects with current (within 2 years) urogenital neoplasms or malignancies including bladder, uterine or cervical cancer 13. Treatment within the 14 days preceding randomization, or expected to initiate treatment during the study with: Any anticholinergic drugs other than trial drug Any drug treatment for overactive bladder 14. On an unstable dosage of any drug with anticholinergic side effects, or expected to start such treatment during the study 15. Subjects currently taking tricyclic antidepressants, diuretics or alpha blockers who have not been on a stable dose of these medications for at least one month 16. Current administration of a selective serotonin reuptake inhibitor (SSRI) and has not been on a stable dose for at least three months 17. Receipt of any electrostimulation or bladder training within the 14 days before randomization, or expected to start such treatment during the study 18. An indwelling catheter or practicing intermittent self-catheterization 19. Use of any investigational drug within 1 months preceding the start of the study 20. Patients with chronic constipation or history of severe constipation 21. Pregnant or nursing women 22. Sexually active females of childbearing potential not using reliable contraception for at least 1 month prior to study start and not agreeing to use such methods during the entire study period and for at least 1 month thereafter \*Reliable contraceptive methods are defined as intrauterine devices (IUDs), combination type contraceptive pills, hormonal implants, double barrier method, injectable contraceptives and surgical procedures (tubal ligation or vasectomy). 23. Any other condition which makes the patient unsuitable for inclusion.