In reply
At a time when there is a volatile, national debate about how to pay for the world's most expensive health care, the providers of that health care rarely have any idea how much money they are spending on it. This is seen once again in the data by Dr Arora and colleagues, in which resident physicians were asked to estimate the costs of different hospital services. Residents tended to overestimate the costs of phlebotomy but underestimate the costs of radiographic imaging.