Table 1 Behaviour change techniques used to support young adults to report dietary intake and eat healthily
BCTa Code | BCT Name | Description of BCT | |
|---|---|---|---|
| Â | Â | Reporting Dietary Intake | Eating Healthily |
3.1 | Social support (unspecified) | Requirement to participate as a dining partner who you are accountable to | Connected to other participants and one dietitian via private Facebook group and Facebook Messenger chat (Facebook); Ad-libitum access to for the 10Â weeks |
4.1 | Instruction on how to perform a behaviour | A4 information sheetb emailed to participants at baseline on how to use the Easy Diet Diary App | Verbal instruction given in 4 Facebook videosb by dietitians over 10Â weeks regarding healthy eating; instructional Facebook posts on how to plan, buy, and cook healthily; hardcopy cookbookb provided at first clinic visit |
6.1 | Demonstration of the behaviour | In-person demonstration of how to use the app at first clinic visit | Healthy cooking videosb shared in Facebook groups |
7.1 | Prompts/cues | Three text remindersb to report intake sent per week | Participants were asked via Messenger to turn on notifications for Facebook to receive prompts regarding healthy eating |
9.1 | Credible source | Information and instruction delivered by two New Zealand Registered Dietitians (mostly via Facebook, minimal instruction also given at screening and initial clinic visit) | |
2.2 | Feedback on behaviour | If participants fell below the level of necessary reporting for each 3- or 4-day period they received a texta telling them this and to increase their reporting | NA |
8.1 | Behavioural practice/rehearsal | Participants were required to practice entering a manual and photographic entry into the app prior to beginning the intervention | NA |
14.3 | Remove reward | Participants were told from screening if them or their dining partner’s level of reporting was consistently insufficient they would stop receiving the free food and be removed from the trial | NA |
1.1 | Goal setting (behaviour) | NA | Participants prompted to set dietary goals every 3rd week |
1.2 | Problem solving | No | Dietitians gave examples of barriers and how to solve them, followed by prompting participants to do the same in the 4 Facebook videosb |
5.1 | Information about health consequences | No | Information given on the long- and short-term health consequences of the dietary sub-behaviours targeted in the Facebook videos and postsb |
5.3 | Information about social and environmental consequences | No | Information given on the social and environmental consequences of the dietary sub-behaviours targeted in the Facebook videos and postsb, such as cost-saving benefits |
12.5 | Adding objects to the environment | No | Receiving weekly food boxes containing 3 vegetarian dinners |