Effect of a Social Norm Email Feedback Program on the Unnecessary Prescription of Nimodipine in Ambulatory Care of Older Adults: a RCT

This randomized clinical trial included 1811 high–nimodipine-prescribing physicians within the national health care system for older adults in Argentina. Physicians randomized to the social norm email treatment group reduced nimodipine prescribing after receiving 2 emails with evidence-based information about the drug and a comparison of the recipient’s and peers’ rates of prescription compared with control physicians who received only information about the risks of overprescribing.

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JAMA Netw Open. 2020;3(12):e2027082. doi:10.1001/jamanetworkopen.2020.27082