With health costs climbing and budgets being stretched, it is crucial that health professionals practice according to the best available evidence. Failure to make use of effective treatments and worse, giving treatments that do harm is a major cause of morbidity in the population. It has been estimated that up to one in two patients fail to receive best evidence care, and up to one in ten may actually get treatment which has the potential to be harmful. In addition, it has been estimated that patients only receive around half the treatments they need.