Investigation of the effects of cues to action on participation in colorectal (CRC) screening - the role of implementation intentions

Interventions: Fecal Immunochemical Tests (FIT) will be mailed to participants. An implementation plan will be included for the 3 intervention groups. The implementation plans provided serve as ‘cues to action’ to provide a plan for goal achievement. Two intervention groups will receive an implementation plan that asks participants to think about, for example, how they will remember to do the test and to write down how they will remind themselves. One group will send a copy of this plan back to CSIRO, the other group will retain the plan. The ‘prescriptive’ implementation plan will ‘tell’ participants how to act, eg place a reminder in a prominent place so that you do not forget to use the kit.
Intervention 1: FIT kit + implementation plan to complete and retain. Receipt of completed kit by Bowel Health Service (BHS) within 35 days
Intervention 2: FIT kit + implementation plan to complete and return to CSIRO. Receipt of completed kit by Bowel Health Service (BHS) within 35 days
Intervention 3: FIT kit + prescriptive implementation plan to complete and return to CSIRO. Receipt of completed kit by Bowel Health Service (BHS) within 35 days
Primary outcome(s): Return of completed FIT kit[Within 35 days of receipt by participant]
Study Design: Purpose: Prevention; Allocation: Randomised controlled trial; Masking: Blinded (masking used);Assignment: Parallel;Type of endpoint: Efficacy