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Table 4 Assessment of Theory Application in Included Studies Using the Theory Coding Scheme (TCS)

From: Are dietary interventions with a behaviour change theoretical framework effective in changing dietary patterns? A systematic review

Application Abood [33] Manios [34] Petrogianni [35] MacPhail [36] Miller [37] Rodriquez [38] Peters [39] Le Blanc [40] Schwarzer [41]
1.Theory mentioned 1 1 1 1 1 1 1 1 1
2.Targeted construct mentioned as predictor of behaviour 1 0 0 1 0 1 1 1 1
3.Intervention based on single theory 1 0 0 1 1 1 1 1 1
4.Theory used to select recipients for the intervention 0 0 0 0 0 0 0 0 0
5. Theory used to select/develop intervention techniques 1 1 1 1 0 1 1 1 1
6. Theory used to tailor intervention techniques to recipients 0 0 0 0 0 1 0 0 0
7. All intervention techniques are explicitly linked to at least 1 theory-relevant construct 0 2 2 2 0 2 0 0 2
8. At least 1, but not all, of the intervention techniques are explicitly linked to at least 1 theory-relevant construct 1 0 0 0 1 1 1 1 0
9. Group of techniques is linked to a group of constructs 0 1 1 0 0 0 0 0 1
10. All theory-relevant constructs are explicitly linked to at least 1 intervention technique 0 2 2 2 0 2 0 0 2
11. At least 1, but not all, theory-relevant constructs are explicitly linked to at least 1
Intervention technique
1 0 0 0 1 1 0 1 0
12. Theory-relevant con0s1tructs are measured 1 0 0 1 1 1 1 1 1
13. Quality of measures 1 0 0 1 1 1 1 1 1
14. Randomization of participants to condition 1 1 1 1 1 1 1 0 0
15. Changes in measured theory-relevant constructs 1 0 1 0 1 1 0 1 0
16. Mediational analysis of constructs 0 0 0 1 1 0 0 1 1
17. Results discussed in relation to theory 1 0 1 1 1 1 1 1 1
18. Appropriate support for theory 0 0 0 0 1 0 0 1 1
19. Results used to refine theory 0 0 0 0 0 0 0 0 0
Total 11 7 8 13 11 16 9 12 14
  1. Nineteen items of the theory coding scheme (TCS) Michie et al. [26]. 9 included studies