We ask how competition influences the prescribing practices of physicians. Law changes granting nurse practitioners (NPs) the ability to prescribe controlled substances without physician collaboration or oversight generate exogenous variation in competition. In response, we find that general...

The introduction of antibiotics as a medical treatment after World War II helped to dramatically increase life expectancy in the industrialized world. As a consequence of over-prescription the last decades ave however seen a sharp increase in prevalence of multi-resistant bacteria, disarming...