A cross-sectional study of the quality of telephone triage in a primary care out-of-hours service.

We evaluated the quality of telephone triage and the appropriateness of the decisions resulting from it at a primary care out-of-hours service. Four simulated clinical cases were used in the Incognito Standardized Patient method: an adult with nosebleed, an adult with fever, a child with fever and a child with vomiting. There was a set of obligatory questions for each case, translated from those used in a previous study. Quality was assessed by the proportion of questions asked by the call-handlers during telephone triage versus those that should have been asked. A total of 22 out-of-hours doctors were involved in the study, working in two different locations in the Verona city area. Over a 4-month period each of the four simulated clinical cases was used five times in calls to the two centres involved. The proportion of obligatory questions asked compared to those expected to be asked was 27-36%. On three occasions out of the 40 simulations, all of which were considered to be manageable by telephone, the patient was advised to go to an outpatient clinic for a face-to-face evaluation. The average duration of the calls was 3 min 47 s. The quality of telephone triage in the regions studied was low and provided considerable room for improvement. This is relevant to patient safety and risk management of the service.