RESUMO
INTRODUCTION AND HYPOTHESIS: This study compared two populations in the Brazilian Amazon, one comprising urban women and the other indigenous origin women from a riparian population, to assess the prevalence of and risk factors associated with stress urinary incontinence (SUI). METHODS: Following sample calculation, 120 indigenous and 260 urban women underwent evaluations including medical history, UI-oriented physical examination, pelvic organ prolapse, and functional assessment of the pelvic floor. Women with complaints of SUI underwent a urodynamic study and completed a quality of life questionnaire (King's Health Questionnaire). Univariate ORs were calculated, and multiple logistic regression models were then built using the stepwise backward method. RESULTS: The prevalence of SUI was similar in both groups (25.8% in indigenous origin women and 20.4% in the urban group (P > 0.05). The parity and number of spontaneous deliveries and home births were higher in the indigenous origin group. Multivariate analysis showed a decreased prevalence of SUI in patients with modified Oxford Scale scores ≥ 3. Women with homebirths had a 3.45-fold higher likelihood of having SUI than women with hospital deliveries (OR 3.45 -CI 1.78-6.70). Quality of life was worse in the domains of SUI impact, hindering daily and physical activities as well as jeopardizing personal and emotional relationships in urban women. CONCLUSIONS: No significant difference in SUI was observed between the groups, despite significantly higher risk factors for SUI in the indigenous origin group.
