Thrombosis Research, cilt.262, 2026 (SCI-Expanded, Scopus)
Objective: Gastrointestinal (GI) bleeding is a serious complication among patients with cardiovascular disease (CVD). This study aimed to evaluate sex differences in the odds of GI bleeding. Methods: We analyzed data from an international case-control study of adults with CVD (n = 4721; 1807 women and 2914 men), conducted between September 3, 2015, and December 20, 2022. Cases presented with overt GI bleeding; controls had no prior GI bleeding. Baseline characteristics were compared by sex. Sequential multivariable logistic regression was used to assess the association between sex and GI bleeding, followed by sex-stratified analyses and tests for sex×factor interactions. Results: Female sex was independently associated with lower adjusted odds of GI bleeding compared with male sex (aOR 0.82, 95% CI 0.72–0.95). While most established factors were associated with GI bleeding in both sexes, Coronary artery disease was associated with higher odds of GI bleeding only in women (aOR 1.44; P-interaction = 0.004). Conclusions: Among patients with CVD, female sex is independently associated with lower odds of GI bleeding. Several factors were shared between sexes, although some sex-specific associations were observed.