title: Mobile intensive care units. An evaluation of effectiveness.
abstract: Implementation of mobile intensive care units in four suburban communities permitted a retrospective evaluation of their impact on patient outcome. Data on 1,796 cases of myocardial infarction were obtained from medical reords and death certificates of patients arriving at four hospitals during a 65-month period. There were statistically significant reductions in mortality rates in two communities (41.1% to 23.9% and 37.6% to 27.0%) after the service began. A reduction in one community (34.5% to 22.0%) was not statistically significant, and the fourth community showed an increase in the mortality rate (31.1% to 44.0%). Analysis of plausible rival hypotheses permitted most of these to be ruled out as causes for the observed reduction in mortality.
mesh_terms: D003325:Coronary Care Units; D004632:Emergency Medical Services; D005069:Evaluation Studies as Topic; D006801:Humans; D007087:Illinois; D008952:Mobile Health Units; D009203:Myocardial Infarction / Q000401:mortality*; D012189:Retrospective Studies