The theoretical basis of a nationally implemented type 2 diabetes prevention programme: how is the programme expected to produce changes in behaviour?

Table 2 Theory and constructs mentioned in each providers’ programme plans and staff training

	Provider A		Provider B		Provider C		Provider D
	Design	Training	Design	Training	Design	Training	Design	Training
Model of behaviour mentioned
Action planning [34]	✔
Behaviour Change Wheel [35]			✔
COM-B Model [29]			✔		✔
Control Theory [36]							✔
Dual Processing Theory [37]	✔	✔
Health Action Model [38]				✔
Health Belief Model [39]				✔
Leventhal’s Common Sense Model [30]	✔	✔
“Positive Model of Good Health” [40]			✔
Self-Regulation Theory [41]	✔	✔					✔
Self-Determination Theory [32]							✔
Social Cognitive Theory [31]	✔						✔
Social Learning Theory [42]		✔
Stages of Change Model [43]				✔
Theory of Planned Behaviour [33]				✔			✔
The Process Model of Lifestyle Behaviour Change [44]							✔	✔
Constructs mentioned
Attitudes			✔
Behavioural regulation			✔		✔		✔
Capability			✔		✔
Cognitive illness representations	✔	✔
Consequences	✔	✔
Coping Styles			✔
Costs/benefits							✔
Descriptive norms			✔		✔
Goals	✔		✔		✔
Intentions			✔
Intrinsic motivation, social support, competence							✔
Health beliefs	✔		✔	✔			✔
Knowledge acquisition			✔
Motivation			✔	✔	✔
Motivation, action and maintenance processes							✔
Pre-contemplation, contemplation, preparation, action, maintenance				✔
Risk perceptions							✔
Opportunity			✔		✔
Problem solving abilities			✔
Self-efficacy	✔	✔	✔	✔	✔		✔
Social environment	✔
Social influences			✔
Vicarious experience	✔	✔

Note: Staff training includes the pre-course reading and face-to-face core training sessions