The Influence of Male Erectile Function on Female Sexual Function: A Cross-Sectional Study in Chinese Infertile Couples
Abstract Background Infertility has a negative effect on sexual function in involuntarily childless couples, but the influence of male erectile function on their partner’s sexual function in this special population was unclear. Therefore, we conducted this study to explore the influence of male erectile function on their partner’s sexual function in Chinese infertile couples. Methods This cross-sectional research was conducted at the first affiliated hospital of Anhui Medical University (Hefei, China) between January and December in 2019. 324 consecutive couples with infertility attending the Reproductive Medicine Center and 326 female-age-matched couples without infertility from the Physical Examination Center were enrolled in this study. The sexual function of the female was assessed by sexual history and the Female Sexual Function Index (FSFI), etc. And their partners’ sexual function was assessed by sexual history, International Index of Erectile Function-15 (IIEF-15), self-reported intravaginal ejaculation latency time (IELT), etc. Demographics (age, educational status, smoking, drinking, monthly income, type of infertility, etc.) and status of depression assessed by the Beck Depression Inventory-II (BDI-II) were also recorded. Results Infertile women have a higher proportion of sexual dysfunction than females without infertility (58.6% vs. 50.3%, χ 2 =4.552, P=0.033). Sexual frequency, depression status and partner’s erectile dysfunction (ED) are independent risk factors for FSD (ED: β =0.909; OR=2.481;95% CI [1.361–4.526]; P = 0.003). Furthermore, the total score of FSFI is positively correlated to the IIEF-15 score of partners ( r =0.347, P <0.001). The majority of six domains of FSFI are also correlated to the five domains of the IIEF-15 ( P <0.05). Conclusions Male’s erectile function is closely related to his partner’s sexual function in Chinese infertile couples. So it is important to assess sexual dysfunction in infertile couples as a whole, and sexual concerns of couples should be assessed and addressed in this special population.