Table 1 Risk of bias analysis for randomized studies
Author, year, Study Name (SN) | i) Did the study report a power calculation and was the study adequately powered to detect intervention effects? | ii) Was the randomization procedure adequately described and carried out? | iii) Did the study include a control group? (randomized participants not a comparison group) | iv) Did the study present baseline characteristics separately for treatment groups? | v) Did the study analyses account for potential differences at baseline? | vi) Were the assessors blinded to treatment allocation at baseline and post-test? | vii) Did the study have a dropout of <20% (<6Â month follow-up) or <30% (>6Â month follow-up for the primary outcome of weight | vii) Did the study use an intention to treat analysis? | ix) Did the study report summary results for each group? | x) Did the study report precision estimates (eg 95% confidence interval) and/or effect sizes? | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|
Author Burtscher et al. [35] | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 3 |
Authors Lindstrom et al. [44], (Eriksson et al. [42] (Laaksonen et al. [43], Lindstrom et al. [45], Lindstrom et al. [46], Tuomilehto et al. [47], Uusitupa et al. [48], Uusitupa et al. [49]) SN: Finnish DPS | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 8 |
0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 | |
0 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 5 | |
Author Payne et al. [41] | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 4 |
Authors Roumen et al. [39], (Corpeleijn et al. [36], Mensink et al. [37], Mensink [38], Roumen et al. [40]) SN: The SLIM study | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 10 |
Authors Villareal [29, 31], (Villareal et al. [30], Villareal [29, 31]) | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |