Comparative Study Between Behavior Therapy and Behavior Therapy Plus Mirabegron in Sexually Active Men With OAB Symptoms

Inclusion Criteria: * Sexually active men with OAB ≥ 20 years * Diagnosed with OAB based on OABSS (OABSS urgency score of ≥2 and sum score of ≥3) * Patients can sign informed consent and record voiding diary Exclusion Criteria: * Concurrent use of PDE5 inhibitor or testosterone therapy during study period * History of stress urinary incontinence * Neurologic conditions associated with OAB symptoms * Evidence of active urinary tract infection or urinary tract stone at screening * Confirmed or suspected genitourinary tract or pelvic malignancy * Genitourinary tract operation during the 3-month period prior to baseline * Postvoid residual urine volume (PVR) ≥ 100 mL * History of uncontrolled hypertension (systolic \>180 mmHg and/or diastolic \>110 mmHg) * History of intolerance to mirabegron * History of medical conditions or presence of patient factors that, in the judgement of the investigator, would preclude adherence to study protocol * Patient had received intravesical onabotulinumoxinA treatment within recent 6 months