Table 4.
Differences in percentage 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 | −2.53 (−3.76 to −1.30) | <0.001 | −2.47 (−3.74 to −1.20) | 0.001 | −2.58 (−4.29 to −0.87) | 0.023 | −2.96 (−4.47 to −0.91) | 0.022 | |
| Slimming World | −1.52 (−2.75 to −0.30) | 0.106 | −1.24 (−2.52 to 0.04) | 0.408 | −0.88 (−2.60 to 0.83) | 1.000 | 0.98 (−2.78 to 0.81) | 1.000 | |
| Rosemary Conley | −2.18 (−3.41 to −0.96) | 0.004 | −2.38 (−3.66 to −1.09) | 0.002 | −1.08 (−2.79 to 0.63) | 1.000 | −1.41 (−3.21 to 0.38) | 0.861 | |
| NHS Size Down | −0.17 (−1.40 to 1.06) | 1.000 | 0.04 (−1.25 to 1.32) | 1.000 | −1.30 (−3.01 to 0.42) | 0.965 | −1.65 (−3.45 to 0.16) | 0.500 | |
| General practice | 0.77 (−0.58 to 2.12) | 1.000 | 0.81 (−0.60 to 2.21) | 1.000 | 0.21 (−1.67 to 2.10) | 1.000 | −0.12 (−2.09 to 1.86) | 1.000 | |
| Pharmacy | 0.00 (−1.36 to 1.35) | 1.000 | 0.01 (−1.44 to 1.46) | 1.000 | 0.36 (−1.53 to 2.25) | 1.000 | −0.05 (−2.08 to 1.99) | 1.000 | |
| Choice | −1.39 (−2.62 to −0.16) | 0.185 | −1.39 (−2.67 to −0.12 | 0.227 | −1.26 (−2.97 to 0.45) | 1.000 | −1.66 (−3.45 to 0.12) | 0.474 | |
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.