Table 1

Characteristics of included studies

Study identification	Type of SCI/control	Patient characteristics	Jadad score	Cessation rate
Wolfe et al8	SCI: advice on NRT use	Intervention: 61 (22.3%) over 80 years, 126 (46.2%) female, 76 (27.9%) smokers	3	N intervention=21 of 76 (27.6%)
	Control: usual care	Control: 50 (20.2%) over 80 years, 118 (47.8%) female, 78 (32.2%) smokers		N control=22 of 78 (28.2%)
	Follow-up: 1 year
Ellis et al9/McManus et al10	SCI: discussion with nurse specialist on lifestyle modification in regards to smoking cessation	Intervention: 64.3 (95% CI 62.4 to 66.1, 95% CI) mean age, 54 (54.0%) male, 36 (36.0%) smokers	4	N intervention=1 of 36 (2.8%)
	Control: usual care	Control: 65.8 (95% CI 64.0 to 67.5) mean age, 52 (49.5%) male, 42 (40.0%) smokers		N control=0 of 42 (0.0%)
	Follow-up: 42 months
Papadakis et al11	SCI: counselling and cost-free quit-smoking medications (NRT, bupropion, varenicline) with follow-up	Intervention: 55.4 (12.4 SD) mean age, 53.3% male, 15 (53.6%) smokers	4	N intervention=4 of 15 (26.6%)
	Control: usual care + prescriptions to pharmacotherapy	Control: 53.5 (8.1 SD), mean age, 69.2% male, 13 (46.4%) smokers.		N control=2 of 13 (15.4%)
	Follow-up: 26 weeks
Frandsend et al12	SCI: counselling and cost-free NRT (gum, tablets, patches, nasal spray) with follow-up	Intervention: 29 (59.2%) age 50–65, 17 (34.7%) female, 49 smokers	4	N intervention=16 of 49 (32.7%)
	Control: 1 time 30 min counselling support	Control: 21 (46.7%) 50–65 age, 22 (48.9%) female, 45 smokers		N control=13 of 45 (28.9%)
	Follow-up: 6 months