Frequency and patient attributes associated with emergency department visits after discharge: Retrospective cohort study

The utilization of emergency department (ED) during the post-discharge period may provide relevant insights to reduce fragmentation of care, particularly in a context of general intense use. We aimed to describe frequency and patient attributes associated with emergency department (ED) visits within 30 days of inpatient discharge in a Portuguese health region-Algarve. Secondary data on inpatient and emergency care, for adult patients discharged in 2016. To analyse the association between outcome-ED visit within 30 days of discharge-and selected variables (admission type and groups of or individual illnesses/conditions), we used age- and sex-adjusted odds ratios (aOR). We included all adult patients (aged [greater than or equal to]18 years) discharged during 2016 from the region's public hospital inpatient departments. The period for ED visits also included January 2017. For 21,744 adults discharged in 2016 (mean age: 58 years; 60% female), 23 percent visited ED at least once within 30 days of discharge. Seventy-five percent of those visits were triaged with high clinical priority. Patients with more comorbidities or specific groups of illnesses/conditions had a significant increased risk of returning ED (aOR and 95% confidence intervals-endocrine: 1.566; 1.256-1.951; mental illness: 1.421; 1.180-1.713; respiratory: 1.308; 1.136-1.505).