Table 1

Inclusion and exclusion criteria

Inclusion criteriaExclusion criteria
Research that examines the effects of providing genetic risk feedback concerning smoking-related diseases to smokers on smoking cognitions (eg, risk perception) and smoking behaviour (eg, abstinence)Research that examines the relationship between genotype differences and smoking-related outcomes without informing the smoker about the results of the genetic test
Research that examines the relationship between genotype differences and effectiveness of intervention type without informing smokers about the results of the genetic test
Research focuses on clinical utility, ethical considerations, etc, of genetic testing for smoking cessation treatments
Research concerns experimental design that compares the effectiveness of genetic risk feedback on smoking-related diseases on smoking cessation with some control conditionResearch concerns cross-sectional, one-group prospective or retrospective designs
Participants should be smokers who receive genetic risk feedback about smoking-related diseasesParticipants are care providers (eg, nurses or general practitioners)
Participants are smokers and related to someone with a smoking-related disease, but are not given feedback about their own genetic profile
Research that examines smokers' interest in undergoing genetic testing as part of smoking cessation treatmentsResearch that focuses on interest in participating in, attendance or uptake of research about the role of genes in smoking behaviour
Research is published in an international peer-reviewed journal and qualifies as original articleResearch is unpublished
Research concerned editorials, commentaries, book reviews, bibliographies, resources or policy documents
Research reported secondary data analysis or only reviewed other studies