Characteristics of randomised controlled trials included in the meta-analysis
| Study | Substudy | QS | Intervention different from control | Duration | Mean age (years) | Sex (% female) | Mean BMI (kg/m2) | No of subjects | Weight loss difference, kg (95% CI) | |
|---|---|---|---|---|---|---|---|---|---|---|
| Weight loss group | Control group | |||||||||
| BMI, body mass index; CBT, cognitive behavioural therapy; LED, low-energy diet; QS, Jadad quality score. | ||||||||||
| *Both the weight loss group and the control group received this intervention in equal amounts. | ||||||||||
| Christensen (2005)59 | — | 3 | LED formula (3.4 MJ/day) Nutrition class; CBT | 8 weeks | 63 | 89 | 36 | 40 | 40 | −6.6 (−8.3 to −4.9) |
| Messier (2000)57 | — | 2 | Nutrition class; CBT | 6 months | 68 | 71 | 36 | 12 | 9 | −6.7 (−11.1 to −2.4) |
| Messier (2004)58 | a | 3 | Nutrition class; CBT | 18 months | 68 | 70 | 34 | 82 | 78 | −3.5 (−9.3 to 2.3) |
| Messier (2004)58 | b | 3 | Nutrition class; CBT >(extra exercise)* | 18 months | 69 | 74 | 34 | 76 | 80 | −1.7 (−7.7 to 4.2) |
| Toda (1998)56 | — | 2 | Mazindol, 0.5 mg/day low-energy soup | 6 weeks | 63 | 100 | 29 | 22 | 15 | −4.2 (−5.1 to −3.3) |