U.S. health care policies should be based on solid evidence, especially those policies with life-and-death consequences. All too often, though, they are not. Consider the recommendation by congressional advisors that the government should favor basic ambulances with only minimal equipment and less trained staff over advanced ambulances with more life-saving equipment and better trained staff. A poorly controlled study, however, claimed that patients were more likely to die during or after riding in the advanced ambulances than in the basic (but cheaper) ambulances.
Why would “basic” ambulances (with less life-saving equipment and with lesser trained staff) be better than the more advanced ambulances? They probably were not, and we’ll show how the data supporting the benefits of “basic” ambulances are unreliable, and often confuse cause and effect. Worse perhaps, the study offers yet another example of economic research devoid of context generating dubious national policy.
Researchers at the University of Chicago and Harvard Medical School used insurance data to examine how well a large sample of Medicare beneficiaries fared after ambulance transport for out-of-hospital emergencies. They compared those sent in basic life support ambulances vs. people transported in advanced life support ambulances.
The results, published in the Annals of Internal Medicine, are of course counterintuitive: patients transported to the hospital in Advanced Life Support ambulances were more likely to die than those riding in the simpler, basic ambulances.