University students who were men who had sex with men (MSM) in Sichuan, China had a higher prevalence of insomnia and probable depression than their non-MSM counterparts: mediation via emotional dysregulations

Abstract Background Men who have sex with men studying in universities (MSM-US) frequently face multiple sexual minority stressors that potentially lead to maladaptive emotional regulations and mental problems. This study compared the prevalence of depression/insomnia between MSM-US and non-MSM male university students (NUS) and hypothesized that the potential differences would be mediated via emotional dysregulation styles (rumination and catastrophizing). Methods The study design was a cross-sectional study. NUS were recruited from a university-based survey using cluster sampling in three universities in China from June to October 2018, while MSM-US from the same university-based survey and the other community-based survey using convenience sampling. The effective samples size was 2,531 (292 MSM-US and 2,239 NUS). Structural equation modeling (SEM) was performed. Results MSM-US had significantly higher prevalence of both probable depression (55.1% versus 35.7%; OR = 4.85, 95% CI: 3.38–6.94) and moderate-to-severe clinical insomnia (17.3% versus 4.1%; OR = 2.21, 95% CI: 1.73–2.83) than NUS. MSM-US were also more likely than NUS to use emotional dysregulation styles (rumination/catastrophizing), which were correlated with probable depression/insomnia (r = 0.17 to 0.31). In the SEM, the differences in depression/insomnia between MSM-US and NUS were partially mediated by the latent variable of emotional dysregulation (rumination and catastrophizing), with effect sizes of 55.0% for probable depression and 33.6% for insomnia, respectively. Conclusions Depression and insomnia were prevalent among male university students in Sichuan, China. Furthermore, MSM-US were at increased risk than NUS for both mental problems; emotional dysregulation partially explained such differences. Future studies are warranted to confirm the findings, develop tailored interventions to address general and MSM-specific stressors and reduce rumination and catastrophizing, and examine whether similar patterns exist in other sexual minority groups.