Effect of cost exposure on medical students' preferred mammography screening strategies: A randomized comparison

Introduction: Many high value care educational interventions have focused on shaping clinical decision-making for individual patients. Few have investigated how trainees integrate cost information into recommendations within a public health context. Methods: Third-year medical students at the University of California San Francisco participated in a small group on benefits and harms of breast cancer screening. We randomly assigned half of small groups to view estimated total costs of different screening strategies. Students selected a screening strategy for coverage by a publicly funded program and one they would recommend to a hypothetical patient. We used the chi-square test for independence and chi-square test for trend to compare proportions. Results: A total of 267 third-year medical students participated. Exposure to costs was associated with selection of significantly less intensive screening strategies for coverage by a publicly funded program (p < 0.05). We found no significant differences in perspectives that involved recommendations for individual patients. Discussion: Students weigh cost considerations more heavily when making decisions about populations, rather than individual hypothetical patients. We suggest that it may be easier for students to relate cost considerations to populations. Initial curricular activities can be framed from this perspective with subsequent activities focusing on individual patient care.