Comparison 2.

Contracts versus control (supervised exercise or minimal care) in weight control

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Weight loss in completers of treatment at 12 weeks	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
1.1 Weight loss (pounds) measured at 12 weeks. Control: minimal care	1		Mean Difference (IV, Fixed, 95% CI)	Not estimable
1.2 Weight loss (pounds) measured at 12 weeks. Control: supervised exercise	1		Mean Difference (IV, Fixed, 95% CI)	Not estimable
2 Weight loss in completers of treatment and follow‐up at 12 months	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
2.1 Weight loss (pounds) measured at 12 weeks. Control: minimal care	1		Mean Difference (IV, Fixed, 95% CI)	Not estimable
2.2 Weight loss (pounds) measured at 12 weeks. Control: supervised exercise	1		Mean Difference (IV, Fixed, 95% CI)	Not estimable
2.3 Weight loss (pounds) measured at 1 year after the end of treatment. Control: minimal care	1		Mean Difference (IV, Fixed, 95% CI)	Not estimable
2.4 Weight loss (pounds) measured at 1 year after the end of treatment. Control: supervised exercise	1		Mean Difference (IV, Fixed, 95% CI)	Not estimable