The NDPP cites the use of the COM-B as one of the models for supporting behaviour change and outcomes in diabetes within its service specification (NHSE, 2022).

Google scholar literature review does not identify any studies that are specific for understanding impact of COM-B in diabetes outcomes, rather than part of a whole intervention with COM-B incorporated within for T2DM. In one paper studying lifestyle behaviour in young adults for physical activity (n=582, mean age 22.8) and eating habits (n=455 mean age 24.9) were studied, using COM-B to explain variance in behaviour rather than looking at outcomes.

Capability, Opportunity and Motivation were all found to support explanations in behaviour (Willmott, Pang, & Rundle-Thiele, 2021).

The study identified that different areas of the model were statistically significant in the nutrition arm in comparison to the physical activity arm.

As the cohort group were of a different age and not related to a specific health outcome it is difficult to apply these results directly for a T2DM model, and was used more to explain and understand why certain behaviours were undertaken rather than to support behaviour change.

COM-B itself in the literature is more focused on looking at the reasons why behaviour change did/did not occur, rather than being a core part of the training and delivery and teaching the model as part of an intervention.