Readmission outcomes:
A total of 2,496 (8.7%) patients were readmitted within 30-days of discharge. Higher proportion of women were readmitted compared to men [1,139 (9.6%) vs 1,357 (8%); p<0.001]. The time to readmission was also shorter in women (women:12.2 ± 9 days vs. men:13.3 ± 9 days, p=0.023). On propensity-matched multivariate time-to-event cox regression analysis, at 30 days, women were more likely to readmit (HR: 1.20, 95% CI:1.04-1.38, p=0.015), which was also true at 180 days (HR: 1.13, 95% CI:1.01-1.27, p=0.047). (Table-3) Subgroup analysis for the readmission due to hemorrhagic causes and thromboembolic causes showed no difference. Condition such as high Charlson category (p<0.001), End-stage renal disease (ESRD) (p<0.001), anemia (p<0.001), pulmonary hypertension (p=0.001), and chronic lung diseases (p=0.022 were associated with more readmissions. Additionally, elective procedures (p=0.020) were associated with lower readmissions (supplementary table).
The common causes of readmissions were congestive heart failure, gastrointestinal bleeding, sepsis, and acute kidney injury. Women had more readmissions due to AF. (Supplementary table)