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Table 1 Themes interpreted from the qualitative evaluation interview data

From: Protecting children from secondhand smoke: a mixed-methods feasibility study of a novel smoke-free home intervention

Core theme

Sub-themes

Acceptability and feasibility of behavioural support

- Approach and characteristics of the advisor

- Face-to-face vs. telephone support

- Sharing of knowledge

- Practical support

- Discussion of personalised feedback results

Acceptability and feasibility of nicotine replacement therapy

- NRT sample bags

- Flexibility to change NRT

- Advice on how to maximise effectiveness of NRT for temporary abstinence

- Side effects

- Using NRT to quit in future

Acceptability and feasibility of personalised feedback

- Urine vs. salvia cotinine

- Sampling techniques

- Air monitor set-up/data collection

- Impact and interpretation of results

Length and structure of intervention

- Duration of the intervention and number of visits

- Intervention intensity

- Amount of information provided at each visit

- Timing of visits within intervention period

- Disengagement/withdrawal towards the end of the intervention

Facilitators and barriers to participation in the intervention

- Recruitment approach

- Desire to quit

- Impact of other adult smokers in the household and wider social network

- Inconvenience allowance

- Safeguarding of children