| Dietary interventions compared to control for preventing obesity in children aged 6 to 12 years |
|
Patient or population: children aged 6‐12 years
Setting: school or wider community
Intervention: dietary interventions
Comparison: control |
| Outcomes |
Anticipated absolute effects* (95% CI) |
№ of participants
(studies) |
Certainty of the evidence
(GRADE) |
Comments |
| Risk with control |
Risk with dietary interventions |
|
Body‐mass index z score (zBMI) |
The mean zBMI ranged from 0.09 to 0.41 |
MD 0.03 lower (0.06 lower to 0.01 higher) |
7231
(9 RCTs) |
⊕⊕⊕⊕
High |
Dietary interventions alone do not reduce zBMI |
|
Body‐mass index (BMI) |
The mean BMI ranged from 17.9 to 25.1 kg/m2
|
MD 0.02 kg/m2 lower (0.11 lower to 0.06 higher) |
5061
(6 RCTs) |
⊕⊕⊕⊕
High |
Dietary interventions alone do not reduce BMI |
| *The risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).
BMI: body‐mass index; CI: confidence interval; MD: mean difference; RCT: randomised controlled trial; zBMI: body‐mass index z score |
|
GRADE Working Group grades of evidence
High certainty: we are very confident that the true effect lies close to that of the estimate of the effect.
Moderate certainty: we are moderately confident in the effect estimate: the true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different.
Low certainty: our confidence in the effect estimate is limited: the true effect may be substantially different from the estimate of the effect.
Very low certainty: we have very little confidence in the effect estimate: the true effect is likely to be substantially different from the estimate of effect. |
