['overactive bladder']
['darifenacin']

        Inclusion Criteria:

          -  Patients with overactive bladder as diagnosed and confirmed by a urologist.

          -  Able to answer the ICIC, King's Health Questionnaire and Overactive Bladder
             Questionnaire.

          -  Able and willing to receive urodynamic studies.

        Exclusion Criteria:

          -  History of pelvic radiotherapy.

          -  Recent pelvic surgery (<1 year).

          -  History of anti-incontinence surgery.

          -  Pregnancy.
      