Results of the first hypothesis on the total score of DAS and its four subscales (i.e., dyadic agreement, marital satisfaction, dyadic cohesion, and expressing affection) showed that the mean scores of women who had undergone hysterectomy were significantly lower than those of the women who had not. Pinar et al. (2012) studied the effect of hysterectomy on body image, self-confidence, and dyadic adjustment in Turkish women with a history of gynecologic cancer and hysterectomy (
15). The results of their study indicated that the level of self-confidence and dyadic adjustment were lower in women who had undergone hysterectomy, compared with those of the healthy women. Hoga et al. (2012) evaluated the psychological viewpoints of a group of Brazilian males whose wives had undergone elective hysterectomy (
31). The study had a qualitative design and was based on narrative analysis (interviewing 22 husbands); results of the study showed that emotional and psychological support given by husbands to their wives increased their marital satisfaction. Konstam et al. reported that chronic diseases can affect the total quality of life and dyadic satisfaction (
32). Results of the current study were consistent with those of the other studies on the relationship between hysterectomy or other chronic diseases and marital adjustment. Also, reduction of marital adjustment after hysterectomy or incidence of other chronic diseases was approved.
According to the results of the second hypothesis, the effect of body image on dyadic adjustment was similar in both study groups and the difference between the groups in this regard was insignificant. Pinar et al. (2012) reported that body image satisfaction, self-confidence, and dyadic adjustment were lower in women who had undergone hysterectomy, compared with those of healthy ones (
15). In addition, body image dissatisfaction was higher in women with lower levels of income and education. Results of their study also indicated the negative effects of hysterectomy on the body image of women with hysterectomy, which was inconsistent with the results of the current study. It seems that many factors are associated with this issue. For instance, time is an important determining factor, since people adapt to their physical properties over time and their body image is gradually improved (
33). Therefore, if the BICI were completed at different intervals from hysterectomy, different results would have been obtained.
In addition, Williams and Clark (2000) reported that partner’s support is a significant factor, in those women who had the benefit of their partners’ support such as assisting them in the decision-making process, helping them during the recovery period, etc., would be less affected by hysterectomy (
34). The contradictory results of different studies may result from the point that their investigated groups were not matched in this regard. Also, different data collection instruments and cultural attitudes toward women and the importance of fertility in the society and family may cause contradictory results. Body image is one of the main factors influencing women’s mental health, which can explain their healthy or unhealthy behaviors due to its association with physical, psychological, and emotional aspects. According to the results of different studies, women’s negative and positive attitudes toward their body image affect their marital relationships. However, according to the aforementioned issues, time is an important factor in evaluating body image, and due to the long interval between undergoing hysterectomy and completion of the questionnaire in the current study (about 5.28 years), it seems that neglecting this issue is the main cause of rejection of the second hypothesis. Not only is body image a perception, but also it can be affected by the active participation of culture.
According to the results of the third hypothesis, the total and every six of the subscale scores of FSFI (i.e., sexual desire, sexual arousal, vaginal lubrication, orgasm, sexual satisfaction, and pain) in women who had undergone hysterectomy were significantly lower than those of the ones who had not. However, discrepant results have been obtained from different studies. Rodríguez et al. (2012) evaluated the sexual function of 100 women one year after hysterectomy using FSFI, which was also employed in the current study (
10). Results of their study also indicated significant sexual dysfunction in women who had undergone hysterectomy compared with the healthy women. Results of a study by Ye et al. (2014) showed reduced sexual function in women who had undergone hysterectomy; however, vaginal extension could not cause sexual enhancement (
35). According to the results of a prospective study by Roovers et al. (2003), sexual pleasure (orgasm) and sexual function were improved in most of the women irrespective of the hysterectomy type (
1). Thakar (2015) reported that the reduction of sexual function after hysterectomy is insignificant (
36); but, results of the current study were consistent with those of the other studies indicating the reduction of sexual desire and sexual function after hysterectomy. Some other studies have shown lower quality of sexual life in cases with rheumatoid arthritis (
37) and ischemic heart disease (
38).
Results of the fourth hypothesis indicated no significant difference between women who had undergone hysterectomy and the ones who had not regarding the effect of body image on sexual function, based on their β-values. Results of bootstrapping showed that the upper and lower bounds of the effect of body image on sexual function were within the overlapping section. Hence, there was no significant difference between the study groups regarding the effect of body image on sexual function (95% CI). Therefore, the fourth hypothesis was not approved. As formerly discussed in the second hypothesis, a few studies have been conducted in this regard. Recently, Burke and Lowenstein (2016) in a systematic study reported no significant difference between the pre- and post-hysterectomy body image (
39), which was in line with the results of the current study. As the parameters of time and husband’s support were not considered in their study, it seems that body image was improved in women over time without playing a significant role in their sexual function.
5.1. Conclusion
According to this study, marital adjustment and sexual function decrease after hysterectomy. Therefore, specialist treatment and family counseling interventions seem to be essential in order to improve sexual performance and marital adjustment in women undergoing hysterectomy.