Lack of association between prehospital response times and patient outcomes.

Limited data exist that examine the relationship between prehospital response times (RTs) and improved patient outcomes. The authors tested the hypothesis that patient outcomes do not differ substantially based on an explicitly chosen advanced life support (ALS) RT upper limit of 10 minutes 59 seconds (10:59 minutes). This case–control retrospective study was conducted in a metropolitan county with a population of 750,000 for the calendar year 2004. (Author/publisher)