Female sexual function index for screening of female sexual dysfunction using DSM-5-TR criteria in Thai women: A prospective cross-sectional diagnostic study

by Patthamaphorn Chongcharoen, Thanapan Choobun, Siwatchaya Khanuengkitkong

Thai Female Sexual Function Index discrimination using the new Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision criteria has not been investigated. This study aimed to evaluate the Female Sexual Function Index as a tool for assessing sexual symptoms and to determine the prevalence of female sexual dysfunction in Thai women using the new Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision criteria. This prospective cross-sectional diagnostic study included sexually active women aged ≥18 years, interviewed from January to June 2023. The participants completed the Thai version of a comprehensive of the Female Sexual Function Index questionnaire encompassing general information and self-reported assessments of female sexual function, followed by a semi-structured interview of distress symptom severity. Female sexual function was determined by screening of the total Female Sexual Function Index score, whereas female sexual dysfunction was evaluated using the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision criteria. Using receiver operating characteristic curves, a clinical cutoff for the Female Sexual Function Index score of 23.1 was determined to identify female sexual dysfunction (area under the curve, 0.76; 95% confidence interval, 0.71–0.80; sensitivity, 75.6%; specificity, 67.7%; positive predictive value, 77.7%; negative predictive value, 65%). A prevalence of 40.2% for female sexual dysfunction was observed in the study population. The results of this study could be used as practical guidance for the screening of women affected by female sexual dysfunction in Thailand in the future.