Background: Stress urinary incontinence (SUI) is a common urological problem in the female population with an estimated prevalence between 4% and 35%. The present study was conducted to evaluate role of urodynamic studies in predicting treatment outcomes for female stress urinary incontinence. Materials & Methods: 78 women with history of symptoms of stress urinary incontinencewere divided equally into 2 groups. Group I was urodynamic-testing group. Group II was evaluation-only group. The primary outcome was treatment success at 12 months, defined as a reduction in the score on the Urogenital Distress Inventory of 70% or more and a response of “much better” or “very much better” on the Patient Global Impression of Improvement. Results: The mean age was 50.4 years and 51.2 years, BMI (kg/m2) was 28.5 and 28.6, duration of incontinence (months) was 96.2 and 85.6, urogenital distress inventory score was 124.6 and 120.3, incontinence severity index score was 7.8 and 7.4, incontinence impact questionnaire score was 42.1 and 42.8, SF-12 score was 97.6 and 96.1 in group I and II respectively. The difference was significant (P< 0.05). A change in urogenital distress inventory score was -100.6 and -98.4, change in incontinence severity index score was -6.2 and -5.1, change in incontinence impact questionnaire score was -35.4 and -37.0 and change in SF-12 score was 5.1 and 7.4 in group I and II respectively. The difference was non- significant (P> 0.05). Conclusion: A preoperative evaluation that also included urodynamic testing is not inferior to a basic office assessment for women with uncomplicated stress-predominant urine incontinence who had stress incontinence on office evaluation.