[What do doctors think an MR examination costs?].

BACKGROUND

By law, Norwegian physicians are required to evaluate costs and benefits of various medical interventions before patients are subjected to them. A prerequisite for filling this "gate-keeping" role adequately is to be informed about medical benefits and costs. This article examines physicians' knowledge of costs related to an MR (magnetic resonance) examination of a knee.

MATERIAL AND

METHODS

In 2006, the Research Institute of the Norwegian Medical Association sent a questionnaire to a representative sample of 1 400 Norwegian physicians. The following question was included: "What do you think is the total cost for a standard MR-examination of a knee (the sum of that paid by patients and the standard reclaimable fee [from health authorities] for this type of examination)". An unpaired t-test was used to compare answers from subgroups of doctors, and Pearson's correlation coefficient was used to establish relationships between cost estimates and other variables.

RESULTS

Physicians' estimates for the costs of an MR examination showed great variation. 57 % of respondents over or underestimated the costs by 50 % or more than the actual price of 1250 NOK. The most common mistake was overestimation; 47 % estimated the cost to be above NOK 1875, while 10 % thought it was below NOK 625.

INTERPRETATION: The results indicate that doctors should know more about costs, they cannot fulfil their role as gate-keepers without such knowledge.