Table 2 Body weight data from studies in meta-analysis and imputations of standard deviations for changes from baseline
Study | Follow-up time point (s) | Baseline weight (Kg) Intervention | Baseline weight (Kg) Control | Follow-up weight (Kg) Intervention | Follow-up weight (Kg) Control | Change weight (Kg) Intervention | Change weight (Kg) Control | Difference change body weight (Kg) intervention Vs control* | Quality Score |
|---|---|---|---|---|---|---|---|---|---|
Behavioural target | |||||||||
n | n | n | n | ||||||
| Â | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SDa) | Mean (SDa) | Mean (95% CI) | Â | |
Barratt 1994 [52] | 6 months | 71.0(NR) | 70.4(NR) | 70.6(NR) | 70.5(NR) | −0.40(2.40a b) | +0.60(3.20ab) | −1.0 (−1.84, −0.16) | Weak |
Dietary | Â | Â | Â | 56 | 130 | 56 | 130 | ||
Gamble 1993 [42] | 11 weeks | 76.30(13.01) | 78.90(5.14) | 76.50(12.44) | 79.10(5.38) | +0.20(4.80c) | +0.20(2.0c) | 0 (−3.69, 3.69) | Moderate |
Physical activity | Â | Â | Â | 8 | 6 | 8 | 6 | ||
Hewitt 2008 [45] | 8 weeks | 68.5 (12.1) | 66.4 (13.2) | 69.4 (12.7b) | 66.5 (13.0b) | +0.9 (4.68c) | +0.1 (4.90c) | 0.8 (−3.51, 5.11) | Strong |
Physical activity | Â | Â | Â | 12 | 8 | 12 | 8 | ||
Gerdle 1995 [46] | 12 months | 67.0(11.6) | 65.0(12.0) | 66.0(10.9) | 65.0(10.4) | −1.0(4.30c) | 0.0(4.50c) | −1.0 (−2.99, 0.99) | Weak |
Physical activity | Â | Â | Â | 32 | 45 | 32 | 45 | ||
Aldana 2005 [34] | 6 months | 89.3(NR) | 85.9(NR) | 84.9(NR) | 84.9(NR) | −4.4(5.05d) | −1.0(5.05d) | −3.4 (−5.06, −1.74) | Moderate |
Dietary and Physical activity | Â | Â | Â | 64 | 79 | 64 | 79 | ||
Racette 2009 [48] | Â | Â | Â | Â | Â | Â | Â | Â | Â |
Dietary and Physical activity | 12 months | 92.4(24.9) | 84.5(20.9) | 91.6(25.5) | 85.1(23.2) | −0.80(5.0a) | +0.60(5.0a) | −1.4 (−3.18, 0.38) | Weak |
42 | 34 | 42 | 34 | ||||||
Christensen 2011 [36] | 3 months | 84.30(16.0) | 83.0(14.4) | 80.71(16.0) | 83.68(14.4) | −3.59(3.80) | +0.68(2.37) | −4.27 (−5.53, −3.01) | Strong |
Dietary and Physical activity | Â | Â | Â | 52 | 42 | 52 | 42 | ||
|  | 12 months | 84.20(16.0) | 83.0(14.4) | 78.4(15.8) | 82.7(14.6) | −5.80(5.90) | −0.30(5.40) | −5.50 (−7.79, −3.21) |  |
52 | 42 | 52 | 42 | ||||||