Values and preferences of patients with severe mental illness regarding smoking cessation interventions: a systematic review with best-fit framework synthesis

Objective To identify values and preferences regarding smoking cessation interventions among adults with severe mental illness

Design Systematic review with best-fit framework synthesis

Data sources MEDLINE, EMBASE, Web of Science, CINAHL and Scopus from inception to 14 November 2025.

Study selection Studies with any design, in any clinical and geographical setting, reporting on adult (18+) current or past smokers with a diagnosis of schizophrenia, bipolar or mood disorder, including major depressive disorder or post-traumatic stress disorder. We selected all quantitative and qualitative findings regarding patients’ values and preferences, including beliefs, attitudes, behaviours and perceived barriers and facilitators, in relation to smoking cessation interventions.

Data extraction and synthesis Two reviewers independently screened studies. After a pilot to increase accuracy, data were extracted by one reviewer and verified by another. Risk of bias was assessed using the Mixed Methods Appraisal Tool. We used the best-fit framework synthesis methodology to synthesise the data.

Results Of 14 970 identified articles, 65 were included. Most studies were of moderate to high quality. Financial costs posed a significant barrier, while education and social support emerged as important facilitators. Patients preferred personal interactions with healthcare providers. Their motivation for cessation varied and was influenced by habits and perceived nicotine dependence. Health concerns and financial savings were primary drivers for reflective motivation. Beliefs regarding treatment varied. Although commonly used, scepticism about nicotine replacement therapy and concerns about the long-term safety of electronic delivery systems were reported. Overall, patients preferred personalised, flexible programmes and emphasised the need for tailored approaches. Digital interventions, especially mobile apps, that provide support, motivational content and relevant information, were perceived as appealing and helpful when sufficiently considering accessibility and usability aspects. Patients commonly perceived smoking as a coping mechanism for negative emotions. Developing new coping strategies and creating smoke-free environments were deemed to contribute to successful cessation.

Conclusions Patient-centred care for people with severe mental illness should leverage behavioural and pharmacological strategies for smoking cessation. Flexibility, accessibility and ongoing support appeared important for addressing stress, withdrawal symptom interpretation and relapse vulnerability in this population.

PROSPERO registration number CRD42022337933.