Table 3.

Matrix of links between COM-B components, identified needs, intervention functions, behavior change strategies, and intervention content.

COM-B component	Needs identified	Selected intervention function	Selected behavior change technique (Code in BCTTv1)	Operationalisation of behavior change technique
Capability (psychological)	Need for effective communication strategies	- Education - Training -Enablement -Modeling	- Instructions on how to perform a behavior - Demonstration of the behavior - Behavioral practice/ rehearsal - Habit formation	Training in communication techniques (e.g. motivational interviewing) for opening up a conversation around alcohol. Training in a toolbox of intervention strategies (e.g., biofeedback) for supporting patients with reducing their alcohol consumption. Homework will be assigned to support behavioral rehearsal of the techniques and strategies in clinical practice.
	Need for accurate information on the relationship between alcohol, health problems and drug interaction	- Education	- Credible source - Information about health consequences	An experienced general practitioner will present practice staff with evidence-based information on the association between alcohol consumption and health problems.
	Need for strategies for dealing with challenging situations	-Enablement	-Problem solving	GPs will be prompted to brainstorm a range of potentially challenging situation (e.g. ethical and practical problems regarding drivers' license and family issues) and ways of dealing with these situations (e.g., using their own patient scenarios)
Opportunity (social)	Need for preparing patients for a conversation about alcohol	- Environmental restructuring	-Prompts/cues -Information about health consequences	Posters will be displayed in the practice waiting rooms to prompt patients to talk to their GP if they are experiencing potentially alcohol-related health problems.
	Need for better cooperation with specialized services	-Environmental restructuring	- Restructuring the social environment	An interactive discussion will address referral to and collaboration with specialized services. Representatives from relevant services (community based, user organization, and specialized services) will discuss scenarios and collaboration.
	Need for a shared practice culture for addressing alcohol	-Environmental restructuring	- Restructuring the social environment	The seminar is designed to facilitate a shared culture in general and on this specific topic, by addressing the practice as such, aiming to include all GPs in the practice, and including staff in all sessions.
Opportunity (physical)	Need for relevant and accessible materials	-Education -Training	-Instructions on how to perform a behavior	GPs will receive a website link with relevant resources. The resources will be developed during the first phase (first two surgeries) of the feasibility study, as a repository of the seminar materials (e.g., list of videos), including links to relevant resources (e.g., papers and relevant screening tools).
	Need for follow-up support	-Enablement	-Instructions on how to perform a behavior -Demonstration of the behavior - Behavioral practice/ rehearsal - Problem solving	An e-health expert will train all practice staff in the use of ‘Endre' a self-administered e-health intervention to address alcohol-related health problems (e.g., sleeping problems, weight gain, hypertension, and mental health problems) between consultations.
Motivation (automatic)	Need for getting into a routine of asking about alcohol when relevant	-Education -Training	-Self-monitoring of behavior - Action planning	GPs will be introduced to pragmatic case finding (PCF), a semi-structured strategy for identifying at-risk drinkers based on clinical relevance. GPs will be informed about the role of alcohol in various common health conditions and treatments, a list of clinical relevance. GPs will be prompted to use this list to help them form a specific plan for when, where and how they will use PCF as a strategy to identify alcohol-related health problems.