Cross-cultural adaptation and validation of the Brazilian Portuguese version of the Female Sexual Distress Scale-Revised questionnaire for women with vaginal laxity

INTRODUCTION AND HYPOTHESIS: Vaginal laxity (VL) can impair women´s quality of life and there are not many tools aimed at quantitatively addressing this complaint. Sexual distress can be present within this group of patients. The aim of our study is to carry out the cross-cultural adaptation/translation and validation of the Female Sexual Distress Scale-Revised (FSDS-R) for Brazilian Portuguese women with VL. METHODS: Women age ≥ 18 years, with VL (n=82), and without VL (n=53) were included. Continuous variables were described in the form of mean/standard deviation or median/range, and Student’s t test was used. The Chi-squared test was used for dichotomous variables. Cronbach's alpha coefficient was used for internal consistency and Spearman's correlation was used to assess construct validity (FSDS-R, Female Sexual Function Index [FSFI], and Incontinence Questionnaire Vaginal Symptoms [ICIQ-VS]). A significance level of 5% was established using a two-tailed test. RESULTS: Women with VL presented more anal/vaginal sexual intercourse than women without VL (p=0.030). All three instruments (FSDS-R, FSFI, and ICIQ-VS) presented discriminant validity between women with and without VL (p<0.001). A high internal consistency (Cronbach´s alpha =0.887) was found in women with VL and without VL (0.917). Regarding construct validity (n=82), there was a strong positive correlation between FSDS-R score and ICIQ-VS scales, except for a weaker correlation between the ICIQ-VS vaginal symptoms subscale (r: +0.2788; p=0.013). A moderate negative correlation was found between FSDS-R and all FSFI domains (p<0.001), except for pain (p<0.062). CONCLUSIONS: The Brazilian version of the FSDS-R showed adequate internal consistency and discriminant validity, and a correlation was found with other instruments such as FSFI and ICIQ-VS.