Retention Is Notoriously Difficult in Behavior Change Programs

Retention is notoriously difficult in behavior change programs. Which strategy helps increase retention?

A) Incentives to join the program
B) Carefully match tailored intervention to stage of change
C) Only enroll participants in the action stage
D) Require participants sign a contract to complete the entire program as part of their informed consent
E) Integrate additional Stages of Change models such as the Precaution Adoption Process Model