Table 2 Theoretical domains and constructs of the TDF and the corresponding questions for interviews

Knowledge:

- Knowledge about the guidelines

- Knowledge about LMIs of the guidelines

- Knowledge sources

• Are you aware of the guidelines on hypertension and diabetes? Can you please explain a little?

• When and how did you receive the guidelines?

• Where do you obtain information on the CVD and diabetes prevention?

Skills:

- Clinical skills

- Counselling skills/the lifestyle modification component of the guidelines

- Frequently recommended LMIs

• How did you learn how to advise the LMIs?

• Did you have any training on the guideline recommendations?

• Which LMIs are provided as part of daily routine practices?

Beliefs about capabilities:

- Technical capacity

- Professional competence

- Empowerment

- Self-esteem

- Belief in outcomes of the guidelines

- Belief in clinical practice change

• What things help you to implement the lifestyle modification interventions effectively in your centre?

• In what ways have the guidelines been useful in your FHC for the prevention of diabetes and CVD?

• How did the guidelines change your practice?

Beliefs about consequences:

- Challenges in the guideline implementation

- External evaluation and review

- Internal evaluation and review

• What do you see are the difficulties in implementing the prevention recommendations in your practice?

• Tell me about the specific examples of the challenges that you have faced?

• What kind of monitoring tools or systems do you use to keep track of how the lifestyle interventions are being offered at your centre?

Perceptions of roles and responsibilities:

- Roles and responsibilities

- Organisational support

- Teamwork

- Hierarchal pressure

- Supervision

- Feedback

- Community support

- Partnership

• What do you see as your role in the CVD and diabetes prevention?

• What are the roles and responsibilities of the various staff in implementing the guidelines?

• Do some staff have greater capability in this than others?

• Can you describe any community linkages your FHC has been engaging with in order to effectively deliver the LMIs of the guidelines?

Environmental context and resources:

- Resources/material/technology

- Environmental barriers

• What support have you been receiving to implement the prevention recommendations of the guidelines over time?

• What support is available/ are you aware of any support?

• What do you see are the difficulties in implementing the prevention recommendations in your practice?

Leadership/optimism:

- Organisational commitment

- Individual commitment

• Emerged after participants had been interviewed

Reinforcement:

- Implementation procedure

- Actual clinical change

- Developing alternative strategies

- Barriers and enablers

- Field visits

- Monitoring system

• What kind of monitoring tools or systems do you use to keep track of how the LMIs are being offered at your centre?

Motivation/goals:

- Goal setting

- Target setting

- Future priority

• What makes the lifestyle interventions like these successful in your practice?

• What practical steps would be beneficial to enhance implementation of the lifestyle modification interventions?

Memory, attention and decision processes:

- Decision-making

• In what circumstances do you refer to these guidelines?

Behavioural regulation

• Are there processes in your FHC that encourage the use of the guidelines?

• What makes the lifestyle interventions like these successful in your practice?

Nature of the behaviours

• Do you practise the lifestyle modification component/prevention of the guidelines?

• What procedures do you practise to intervene the lifestyle modifications?

• What do you advise your clients on CVD and diabetes?