Cost-effectiveness of patient mailings to promote colorectal cancer screening

Abstract

Background: Programs to promote colorectal cancer screening are common, yet information regarding the cost-effectiveness of such efforts is limited.

Objective: To assess the cost-effectiveness of patient mailings to increase rates of colorectal cancer screening.

Research design: Incremental cost-effectiveness analysis of a randomized, controlled trial. The intervention involved 21,860 patients aged 50 to 80 years across 11 health centers overdue for colorectal cancer screening. Patients were randomized to receive a mailing that included a tailored letter, educational brochure, and fecal occult blood test kit at baseline and 6 months follow-up.

Measures: We calculated the incremental cost-effectiveness of these mailings to promote colorectal cancer screening by fecal occult blood testing, flexible sigmoidoscopy, or colonoscopy using internal cost estimates of labor and supplies.

Results: Colorectal cancer screening rates were higher for patients in the intervention compared with control patients (44% vs. 38%, P < 0.001). The total cost of the intervention was approximately $5.48 per patient, resulting in a cost-effectiveness ratio of $94 per additional patient screened. This estimate ranged from $69 to $156, based on assumptions of the cost of the intervention components, magnitude of intervention effect, age range, and size of the targeted patient population.

Conclusion: Tailored patient mailings are a cost-effective approach to improve rates of colorectal cancer screening.