Differences between early and late readmissions among patients: a cohort study.

Area of Science:

• Health Services Research
• Clinical Epidemiology
• Patient Outcomes

Background:

• Early and late hospital readmissions may stem from distinct causes, necessitating tailored prevention strategies.
• Understanding the evolving predictors of readmission within 30 days post-discharge is crucial for effective intervention.

Purpose of the Study:

• To investigate whether the factors predicting hospital readmission change within the 30-day post-discharge period.
• To differentiate between predictors of early (0-7 days) and late (8-30 days) readmissions.

Main Methods:

• A retrospective cohort study was conducted at an academic medical center.
• Data from 13,334 admissions (8,078 patients) between January 1, 2009, and December 31, 2010, were analyzed.
• Factors examined included acute illness burden, inpatient care processes, discharge instability, chronic illness burden, and social determinants of health.

Main Results:

• Early readmissions were associated with longer hospital stays, rapid response team activation, organ failure medications, and barriers to learning.
• Discharge timing between 8:00 a.m. and 12:59 p.m. was linked to lower early readmission rates.
• Late readmissions were associated with organ failure medications, hemodialysis, barriers to learning, and reliance on Medicare/Medicaid.

Conclusions:

• The 30-day post-discharge period is not a uniform entity regarding readmission predictors.
• Distinct causal factors and prevention strategies may be required for early versus late readmissions.
• Findings are limited to a single institution.