Introduction Unlike male sexual function, which is relatively easy to assess, female sexual function is still a diagnostic challenge. Although numerous new measurements for female sexual dysfunction (FSD) have recently been developed, the Female Sexual Function Index (FSFI) remains the gold standard for screening. It has been validated in more than 30 countries. The FSFI has been used in several studies conducted in Poland, but it has never been standardized for Polish women. Aim The aim of this study was to develop a Polish version of the FSFI (PL-FSFI). Materials and Methods In total, 189 women aged 18–55 years were included in the study. Eighty-five were diagnosed with FSD as per the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM IV-TR) criteria; 104 women did not have FSD. All subjects completed the PL-FSFI at baseline (day 0), day 7, and day 28. Main Outcome Measures Test–retest reliability was determined by Pearson's product–moment correlations. Reliability was tested using Cronbach's α coefficient. Construct validity was evaluated by principal component analysis using varimax rotation and factor analysis. Discriminant validity was assessed with between-groups analysis of variance. Results All domains of the PL-FSFI demonstrated satisfactory internal consistencies, with Cronbach's α value of >0.70 for the entire sample. The test–retest reliability demonstrated good-to-excellent agreement between the assessment points. Based on principal component analysis, a 5-factor model was established that explained 83.62% of the total variance. Domain intercorrelations of the PL-FSFI ranged from 0.37–0.77. The optimal PL-FSFI cutoff score was 27.50, with 87.1% sensitivity and 83.1% specificity. Conclusion The PL-FSFI is a reliable questionnaire with good psychometric and discriminative validity. Therefore, it can be used as a tool for preliminary screening for FSD among Polish women.

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Introduction The concept of sexually related personal distress, central to the diagnosis of all female sexual dysfunction (FSD), is currently a subject of scientific debate. Several psychometric instruments have been used to measure sexually related personal distress in women, including the Female Sexual Distress Scale (FSDS) and its revised version (FSDS-R). Aim To develop a Polish version of the FSDS-R (PL-FSDS-R). Methods In total, 210 women aged 18–55 years were included in the study. Seventy-five were diagnosed with hypoactive sexual desire disorder (HSDD), 31 were diagnosed with another FSD, and 104 were control. All subjects completed the PL-FSDS-R at baseline (day 0), day 7, and day 28. Internal consistencies were evaluated by Cronbach's α. Intraclass correlation coefficient was used to assess test–retest reliability. Discriminant validity was assessed by comparing mean scores of the FSD and control groups in a between-groups analysis of variance. Receiver operating characteristic (ROC) analysis was performed to determine optimal cutoff values of the PL-FSDS-R. Main Outcome Measures To measure the validity and reliability of the PL-FSDS-R and to determine optimal cutoff values. Results Mean total PL-FSDS-R score was statistically higher in women with HSDD and other FSD compared to healthy individuals, showing the test had discriminant validity. The frequency of sexual intercourse and quality of relationship with sexual partner but not other sexual behaviors were statistically correlated with the PL-FSDS-R score. ROC analysis confirmed these findings. All domains of the PL-FSDS-R demonstrated satisfactory internal consistencies, with a Cronbach's α-value of >0.70 for the entire sample. Test–retest coefficients were between 0.86–0.92, with the best reliability for a 7-day recall period. Conclusions The PL-FSDS-R is a reliable questionnaire with good psychometric and discriminative validity, and can be used to measure sexually related personal distress in Polish women with FSD with a cutoff score of ≥13.