Association of arbitrary prescribing behavior to costly drug expenditures: a pharmacoeconomic study in primary care

We aimed to examine the cost-related prescribing performance of primary care physicians who had a higher versus lower tendency of arbitrary prescribing. In this cross-sectional study, we evaluated the prescriptions of primary care physicians in Istanbul, collected with 3:1 systematic sampling. We determined higher versus lower arbitrary prescribing by the physician's degree of writing the solo diagnosis of "Z00- General examination without diagnosis/complaint": those for whom such prescriptions constituted >5% were classified as Group A and those with them at