Figure 1

Included patients and patients lost to follow-up due to incomplete registration. Box 1: Total number of 1-1-2 registrations in the study period. Box 2: Excluded patients. Emergency level E and cancelled assignments. Box 3: All patients that received an ambulance via a 1-1-2 call. Box 4: Patients, that received an ambulance via a 1-1-2 call, with a valid Danish Index code registered. Box 5. Patients that received an ambulance via a 1-1-2 call, with a valid Danish Index code and a valid civil registration number registered (making complete follow-up possible).