Implementation and Evaluation of a Novel Colorectal Cancer Decision Aid Using a Centralized Delivery Strategy

Colorectal cancer (CRC) is the second leading cause of cancer-related deaths in the United States; however, CRC screening reduces both incidence and mortality rates. Patient decision aids (DAs) are an evidence-based strategy to support patients making health-related decisions. CRC screening DAs can be unsuccessful due to provider preferences for colonoscopy and lack of effective DA implementation strategies within clinical settings.

A hybrid implementation-effectiveness study was conducted testing the feasibility of using an existing centralized preventive health screening outreach infrastructure to implement a novel CRC DA across a health care system. Participants included primary care patients at one of three study clinics. Implementation was assessed by determining whether patients remembered receiving the DA and were aware of CRC screening options. Effectiveness was measured by comparing overall screening rates between the control and intervention groups.

Using a centralized delivery system was a feasible and efficient method for implementing DAs to a large academic health system. More than 90% of the intervention group remembered receiving the DA, and 80% found it helpful in their decision-making process. The DA was successful in improving CRC screening knowledge; however, overall CRC screening rates significantly decreased between the control and intervention periods (50.8% vs. 39.2%, respectively; p = 0.03).

Centralized delivery is a feasible method for DA implementation. Although DAs increase knowledge, the true effectiveness of CRC DAs in clinical settings is unknown, as a result of the number in screening tests, diversity in DA format, and the variability in dissemination and implementation practices.