Comparison 3. Text messaging + other smoking cessation support versus other smoking cessation support alone.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Long‐term abstinence (all randomised)	4	997	Risk Ratio (M‐H, Random, 95% CI)	1.59 [1.09, 2.33]
2 Long‐term abstinence (complete case)	4	796	Risk Ratio (M‐H, Random, 95% CI)	1.63 [1.12, 2.37]