Multivariate Cox survival analysis with predictors of mortality after adjusting for comorbidities and DBT. COPD, chronic obstructive pulmonary disease; DBT, door-to-balloon time; EF, ejection fraction; MI, myocardial infarction; MR, mitral regurgitation; ST... Multivariate Cox survival analysis with predictors of mortality after adjusting for comorbidities and DBT. COPD, chronic obstructive pulmonary disease; DBT, door-to-balloon time; EF, ejection fraction; MI, myocardial infarction; MR, mitral regurgitation; STEMI, ST elevation myocardial infarction. Amgad Mentias et al. Open Heart 2016;3:e000493 ©2016 by British Cardiovascular Society