Covariates

In the multivariable model, the covariates were selected before analysis and we included those that were considered most relevant based on current literature (ie, sex, age, living alone, baseline income and educational level, comorbidities [heart failure, arrhythmia, diabetes mellitus, cerebrovascular disease, chronic kidney disease, chronic obstructive pulmonary disease, and depression]), invasive coronary procedures (coronary angiography, PCI, and coronary artery bypass grafting), and time period of index admission.20, 21, 22, 23 We examined the comorbidity status based on discharge‐ and outpatient diagnoses 5 years before the date of inclusion. Use of medication was investigated 6 months before date of inclusion. Diabetes mellitus and depression were either defined from International Classification of Diseases codes from the National Patient Registry or use of antidiabetic medication or antidepressant, respectively. International Classification of Diseases‐ and Anatomic Therapeutical Chemical‐codes used in the study are found in Table S1.