Factors associated with hospital revisitation within 7 days among patients discharged at triage: A case-control study

Background and importance Existing data are limited for determining the medical conditions best suited for an emergency department (ED) redirection strategy in a heterogeneous, nonurgent patient population. Objective The aim was to establish factors associated with hospital revisits within 7 days among patients discharged or redirected by a triage team. Design, settings, and participants An observational single-center case-control study was conducted at the Tampere University Hospital ED for the full calendar year of 2019. The cases comprised unplanned hospital revisits within 7 days of being discharged or redirected by triage, while the controls were discharged or redirected but did not revisit. Outcome measures and analysis The primary outcome was an unplanned hospital revisit within 7 days. A subgroup analysis was conducted for revisits leading to hospitalization. Basic demographics, comorbidities before triage, and triage visit characteristics were considered as predictive factors for the revisit. A backward stepwise conditional logistic regression analysis was performed. Main Results During the calendar year of 2019, there were a total of 92 406 ED visits. Of these, 7216 (7.8%) visits were discharged or redirected by triage, and 6.5% (n = 467) of all these patients revisited. Of the revisiting patients, 25% (n = 117) were hospitalized. In multivariable analysis, higher age was associated with both revisitation [odds ratio (OR): 1.01, 95% confidence interval (CI): 1.00-1.02] and hospitalization (OR: 1.02, 95% CI: 1.00-1.04). Furthermore, using other visits as a reference, abdominal pain was associated with revisitation and hospitalization (OR: 3.70, 95% CI: 2.24-6.11 and OR: 5.28, 95% CI: 2.08-13.4, respectively). Conclusion Higher age and abdominal pain were associated with hospital revisitation and hospitalization within 7 days among patients directly discharged or redirected by the triage team. Regardless of the triage system in use, there might be patient groups that should be evaluated more cautiously if a triage-based discharge or redirection strategy is to be considered.