Gender differences in the association of sexual orientation with depressive symptoms: A national cross-sectional study among Chinese college students

Depressive symptoms among the lesbian, gay, bisexual (LGB) in college students have generated worldwide concern in recent decades. This study aimed to estimate the associations between sexual orientation and depressive symptoms among Chinese college students, with a focus on gender differences.A total of 30,733 college students were recruited from 10 Chinese province-level regions with a multistage, stratified cluster, random sampling method between March and June 2019. The 20-item Center for Epidemiologic Studies Depression Scale (CESD-20) was used to measure the depressive symptoms. Sexual orientation was assessed by asking the question, "Which of the following options best describes you?" The responses were categorized as heterosexual, gay/lesbian, bisexual, and unsure.In our sample (N = 30,733), the prevalence of depressive symptoms was 6.1%. Among the surveyed Chinese college students, 3.7% self-reported as LGB, and 7.2% were unsure. LGB (gay/lesbian: 14.9% for males and 6.8% for females; bisexual: 9.3% for males and 16.4% for females) had a higher risk of depressive symptoms than heterosexuals. After adjusting for control variables, LGB and unsure college students were more likely to have depressive symptoms than their heterosexual peers. For males, unsure college students reported the highest risk of depressive symptoms; for females, lesbian and bisexual college students reported the highest risk of depressive symptoms.The cross-sectional study design and self-reported depressive symptoms and sexual orientation.LGB was associated with increased depressive symptoms among Chinese college students. Furthermore, the associations of LGB sexual orientation with depressive symptoms were more robust for females than males.