Materials and Methods: In this cohort study, 441 nulliparous women were studied. The women were followed up from the beginning of pregnancy until the postpartum period. The prevalence of urinary incontinence was determined among them. Risk factors that could play a significant role were analyzed using questionnaires.

Results: In this study, 441 nulliparous women with an average age of 28.1 ± 3.7 years were studied. The prevalence of urinary incontinence in the third trimester of pregnancy was 39.4% and it was 31% in the postpartum period. Vaginal delivery, maternal weight, and fetal weight (> 4 kg) were the most important risk factors for increasing the incidence rate of urinary incontinence. In this study, age had no role in incontinence. The severity of incontinence in 26.6% of the participants over 5 was based on visual analogue scale (VAS) scoring.

Conclusion: Urinary incontinence is one of the common disorders during pregnancy and postpartum period that can affect quality of women life significantly. Type of delivery and maternal and fetal weights are the most important risk factors for increasing this disorder. Unlike previous studies, age did not play any role in incontinency in this study.