Analysis 7.2. Comparison 7 All types of antidepressant versus placebo for smoking cessation: weight change, Outcome 2 Mean weight change (kg) at end of treatment: dose response. . . . . . . . . . . . . . . . . . Analysis 7.3. Comparison 7 All types of antidepressant versus placebo for smoking cessation: weight change, Outcome 3 Mean weight change