This dataset is a de-identified subset of data collected from the DIagnosing Systemic failures, Complexities and HARm in GEriatric discharges (DISCHARGE) study on medication reconciliation and its outcomes among patients above 64 years old who were discharged from Yale-New Haven Hospital, a tertiary care hospital, between 2009 and 2010 with heart failure, pneumonia, or acute coronary syndrome. Other inclusion criteria were the ability to speak English or Spanish, not being in hospice care, able to participate in a telephone interview (or permitting caretakers to participate in lieu of the patient). Patients were excluded if they were delirious or failed a cognitive assessment.

The subset includes 303 patients from the DISCHARGE study who were taking at least 1 medication in any of these drug classes at the time of hospital admission: proton pump inhibitors (PPIs), histamine H2-receptor antagonists (H2 blockers), hydroxymethylglutaryl CoA reductase inhibitors (statins), angiotensin-converting enzyme (ACE) inhibitors, angiotensin receptor blockers (ARBs), and inhaled corticosteroids (ICS). Data was collected through retrospective chart review to identify changes to medication regimen due to therapeutic interchange or error.