Tobacco remains the key modifiable risk factor for the development of a number of diseases, including cardiovascular disease, cerebrovascular disease, lower respiratory infections, chronic obstructive pulmonary disease, tuberculosis and cancer. Among priority populations, smoking prevalence remains high, smokers tend to relapse more often and earlier and fewer are able to sustain quit attempts. This systematic review provides an update on the literature. Areas covered: Twenty-four randomized controlled trials published from 2010-2017, in English language, were identified after searching on Medline, Ovid, Embase and PsycINFO databases. Studies reported on the effectiveness of smoking cessation interventions among six disadvantaged groups known to have high smoking rates: (i) homeless, (ii) prisoners, (iii) indigenous populations, (iv) at-risk youth, (v) people with low income, and (vi) those with a mental illness. Narrative review and assessment of methodological quality of included papers was undertaken. Expert commentary: There is a growing evidence base of methodologically robust studies evaluating a variety of behavioural smoking cessation interventions for priority populations. Multi-component interventions and those examining behavioural interventions incorporating mindfulness training, financial incentives, motivational interviewing and extended telephone-delivered counseling may be effective in the short-term, particularly for smokers on low incomes and people with a mental illness.
Keywords: Smoking cessation; homeless persons; indigenous populations; low income population; mentally ill; prisoners; review.