Table 3.
Results from meta-regressions
| Component | Univariate coefficient (95% CI, P value) | Multivariable coefficient† (95% CI, P value) |
|---|---|---|
| Delivery of diet components | ||
| Contact with dietitian | −1.0 kg (95% CI −2.8 to +0.8, P = 0.26) | −1.5 kg, 95% CI −2.9 to −0.2, P < 0.001 |
| Calorie counting | −3.3 kg (95% CI −4.7 to −1.9, P < 0.001) | −3.3 kg, 95% CI −4.6 to −2.0, P = 0.027 |
| Delivery of physical activity components | ||
| Supervised physical activity* | −1.7 kg (95% CI −3.5 to 0.0, P = 0.055) | |
| Specific equipment or setting required for physical activity | −0.8 kg (95% CI −3.4 to +1.9, P = 0.56) | |
| Intervention format | ||
| Group and individual contact | −0.4 kg (95% CI −1.6 to +2.7, P = 0.68) | |
| Individual contact only | −0.04 kg (95% CI −1.9 to +2.0, P = 0.97) | |
| Group contact only | 0.4 kg (95% CI −1.6 to +2.3, P = 0.71) | |
| Face-to-face contact* | −0.6 kg (95% CI −3.2 to +2.1, P = 0.66) | |
| Programme length (up to 12 months) | −0.3 kg (95% CI 0.5 to −0.1, P = 0.009) | |
| Contact frequency (defined as average number of weeks between contacts)* | 0.1 kg (95% CI −0.3 to +0.5, P = 0.60) | |
| Number of sessions of therapy | +0.03 kg (95% CI −0.04 to −0.01, P = 0.004) | |
| Decreasing intensity of support | −1.4 kg (95% CI −3.0 to +0.2, P = 0.092) | |
| Behavioural change techniques (by domain) | ||
| Goals and planning | −0.4 kg (95% CI −1.1 to +0.2, P = 0.18) | |
| Comparison of behaviour | −1.5 kg (95% CI −2.9 to −0.1, P = 0.032) | −1.5 kg (95% CI −2.9 to −0.1, P = 0.032) |
| Self-belief | +2.1 kg (95% CI +0.1 to +4.1, P = 0.040) | |
| Shaping knowledge | −1.7 kg (95% CI −7.7 to +0.2, P = 0.082) | |
| Repetition and substitution | −0.9 kg (95% CI −1.9 to +0.1, P = 0.081) | |
| Antecedents | −1.2 kg (95% CI −3.8 to +1.5, P = 0.38) | |
| Feedback and monito ring | −0.4 kg (95% CI −1.5 to +0.7, P = 0.47) | |
| Social support | +0.5 kg (95% CI −0.6 to +1.6, P = 0.36) | |
| Covert learning | −0.3 kg (95% CI −4.2 to +3.5, P = 0.87) | |
| Reward and threat | +0.6 kg (95% CI −0.3 to +1.5, P = 0.19) | |
| Regulation | +1.0 kg (95% CI −0.04 to +2.0, P = 0.060) | |
| Associations | +0.3 kg (95% CI −2.1 to +2.6, P = 0.82) | |
| Natural consequences | +1.1 kg (95% CI −0.2 to +2.5, P = 0.091) | |
| Identity | +2.1 (95% CI −4.0 to +8.2, P = 0.49) | |
*
Consistent with direct comparisons.
†
Where variable included in final model.