3. Evaluation of the included studies using the CReDECI 2 checklist.
| Bellomo 2005 | De Visschere 2011 | De Visschere 2012 | Frenkel 2001 | MacEntee 2007 | Mojon 1998 | Schou 1989 | Van der Putten 2013 | Zenthöfer 2013 | |
| Item 1: Description of the intervention’s underlying theoretical basis | No | No | Yes, guideline implementation theory; p. e97 & p. 2 | (Yes), qualitative data from previous research; p. 92 | Yes, pyramidal scheme (Jones 1977); p. 26 (Ref. 30‐35) | No | Yes, "active involvement principle"; (Ref. 14) | Yes, guideline implementation theory; p. 1144 & p. 2 | No |
| Item 2: Description of all intervention components, including the reasons for their selection as well as their aims/essential functions | No | No | No | No | Yes, p. 26 | No | Yes, p. 3 (& Ref. 14) | No | No |
| Item 3: Illustration of any intended interactions between different components | No | No | (Yes, p. e98) | No | Yes, p. 26 & 28 | No | No | (Yes), p. 1146 | No |
| Item 4: Description and consideration of the context’s characteristics in intervention modelling | No | No | No | No | No | No | No | No | No |
| Item 5: Description of the pilot test and its impact on the definite intervention | No | No | No | (Yes), p. 92 | (Yes), research proposal (provided by the author on request) | No | Yes, Ref. 14 (modified intervention) | No | No |
| Item 6: Description of the control condition (comparator) and reasons for the selection | Yes, p. 26 | No | Yes, p. e97 | No | Yes, p. 28 | Yes, p. 828 | No | Yes, p. 1146 | No |
| Item 7: Description of the strategy for delivering the intervention within the study context | Yes, p. 26 | No | Yes, p. e98 | Yes, p. 290 & 92 | Yes, p. 27‐28 | Yes, p. ?? | Yes, p. 3 | Yes, p. 1146 | Yes, p. 262‐263 |
| Item 8: Description of all materials or tools used in the delivery of the intervention | No | No | Yes, p. e98 | Yes, p. 92 | Yes, p. 27‐28 (footnotes 2+3; restructured training material: bcdental.org/YourDentalHealth/YourDentalHealth.aspx?id=9974) |
Yes, p. 143 | No | Yes, p. 1146 | Yes, p. 263 & Ref. 19 |
| Item 9: Description of fidelity of the delivery process compared to the study protocol | No | (Yes), p. 419 | No | No | Yes, p. 30 | Yes, p. 830 | No | No | No |
| Item 10: Description of a process evaluation and its underlying theoretical basis | No | (Yes), p. 423 qualitative approach/publication mentioned | Yes, p. 5 | No | (Yes), research proposal MacEntee 2007 | No | No | Yes, p. 5 | No |
| Item 11: Description of internal facilitators and barriers potentially influencing the delivery of the intervention as revealed by the process evaluation | No | Yes, p. 423 (findings published in an additional publication p. 115‐122) | Yes, p. e102 results of process evaluation scantly mentioned (more information in a second publication p. 115‐122) | No | No (planned, but unfinished/unpublished) | No | No | No (publication in preparation) | No |
| Item 12: Description of external conditions or factors occurring during the study which might have influenced the delivery of the intervention or mode of action (how it works) | No | No | No | No | Yes, p. 31‐32 | Yes, p. 147 | No | No | No |
| Item 13: Description of costs or required resources for the delivery of the intervention | No | No | No | Yes, tab 4 on p. 294 | No | No | No | No | No |