Table 3.
Differences in weight loss at programme end and one year follow-up between intervention groups and comparator arm (exercise only)
| Intervention group | Programme end | One year | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Mean difference (95% CI) | P value | Adjusted mean difference* (95% CI) | P value | Mean difference (95% CI) | P value | Adjusted mean difference* (95% CI) | P value | ||
| Weight Watchers | −2.41 (−3.60 to −1.23) | <0.001 | −2.34 (−3.56 to −1.13) | 0.001 | −2.38 (−3.98 to −0.78) | 0.025 | −2.49 (−4.15 to −0.83) | 0.024 | |
| Slimming World | −1.55 (−2.74 to −0.37) | 0.072 | −1.24 (−2.47 to −0.02) | 0.322 | −0.81 (−2.41 to 0.78) | 1.000 | −0.90 (−2.57 to 0.77) | 1.000 | |
| Rosemary Conley | −2.22 (−3.40 to −1.04) | 0.001 | −2.39 (−3.61 to −1.16) | 0.001 | −1.05 (−2.64 to 0.55) | 1.000 | −1.35 (−3.03 to 0.33) | 0.798 | |
| NHS Size Down | −0.37 (−1.55 to 0.82) | 1.000 | −0.09 (−1.31 to 1.14) | 1.000 | −1.37 (−2.97 to 0.23) | 0.649 | −1.65 (−3.33 to 0.04) | 0.386 | |
| General practice | 0.65 (−0.66 to 1.95) | 1.000 | 0.61 (−0.73 to 1.96) | 1.000 | 0.25 (−1.51 to 2.01) | 1.000 | 0.12 (−1.96 to 1.72) | 1.000 | |
| Pharmacy | −0.10 (−1.41 to 1.20) | 1.000 | 0.12 (−1.51 to 1.27) | 1.000 | 0.41 (−1.35 to 2.17) | 1.000 | 0.06 (−1.84 to 1.96) | 1.000 | |
| Choice | −1.30 (−2.49 to −0.12) | 0.216 | −1.33 (−2.55 to −0.11) | 0.224 | −1.07 (−2.67 to 0.53) | 1.000 | −1.47 (−3.13 to 0.20) | 0.591 | |
Negative difference favours intervention arm. P values adjusted to maintain overall 5% type 1 error rate across seven comparisons; 95% confidence intervals not adjusted.
*Adjusted for weight at baseline, physical activity at baseline, age, sex, and ethnic group.