Sexual orientation and all-cause mortality: A population-based prospective cohort study in southern Sweden

OBJECTIVES: To investigate associations between sexual orientation and all-cause mortality. STUDY DESIGN: Prospective cohort study. METHODS: The 2008 public health survey in Scania was conducted with a postal questionnaire later linked to 9.3-year prospective death register data, including 25,071 respondents, aged 18–80. Analyses were conducted with sex-stratified survival analyses. RESULTS: In the models including age, birth country and socioeconomic status, bisexual men had a hazard rate ratio (HRR) 1.91 (1.10–3.30) compared to heterosexual men, and bisexual women had a HRR 3.18 (1.64–6.18). No significant differences were observed for homosexuals. Other women had a HRR 2.32 (1.47–3.67). CONCLUSIONS: Bisexuals men and women had higher mortality than heterosexuals.