Background: Emergency department crowding is a growing international problem. One possible reason for crowding might be the rising number of "walk-in" patients presenting with "non-urgent" health complaints.
Methods: In a retrospective cohort study in adult medical patients presenting to the emergency unit of the University Hospital Zurich, we determined the frequency of "non-urgent" encounters, examined patient characteristics predictive for such encounters, and explored the impact of a simple, non-validated triage tool on diverting "non-urgent" cases to alternate sites of primary care.