Table 1

Quality assessment of trials on nutrition education

Quality Assessment

Summary of Findings


Directness

No of events


No of studies

Design

Limitations

Consistency

Generalizability to population of interest

Generalizability to intervention of interest

Intervention

Control

RR or SMD (95% CI)


Height gain: Moderate outcome-specific quality


6 studies

Food secure[13,15,19,21]

Food insecure[16,17]

RCT + non RCT

Random effect model was used because of heterogeneity

3 studies suggest benefit

1410

1327

SMD 0.35 (0.08, 0.62)

Food secure population

SMD 0.00 (-0.15, 0.16)

Food insecure population


Height for age: Moderate outcome-specific quality


5 studies

Food secure[14,15,19,21]

Food insecure[18]

RCT + non RCT

Random effect model was used because of heterogeneity

2 studies suggest benefit

1007

974

SMD 0.22 (0.01, 0.43)

Food secure population

SMD 0.25 (0.09, 0.42)

Food insecure population


Stunting: Moderate outcome-specific quality


Food secure[14,15,19,21]

Food insecure[18]

RCT + non RCT

Random effect model was used because of heterogeneity

1 study suggest benefit

991

949

RR 0.70 (0.49,1.01)

Food secure population

RR 0.68 (0.60,0.76)

Food insecure population


Weight gain: Moderate outcome-specific quality


7 studies

Food secure[13,15,19,21]

Food insecure[12,16,17]

RCT + non RCT

Random effect model was used because of heterogeneity

4 studies suggest benefit

1583

397

SMD 0.40 (0.02, 0.78)

Food secure population

SMD 0.06 (-0.13, 0.25)

Food insecure population


Weight-for-age: Moderate outcome-specific quality


6 studies

Food secure[14,15,19,21]

Food insecure[12,18]

RCT + non RCT

Random effect model was used because of heterogeneity

2 studies suggest benefit

1260

1150

SMD 0.12 (-0.02, 0.26)

Food secure population

SMD 0.26 (0.12, 0.41)

Food insecure population


Underweight: Moderate outcome-specific quality


1 study[16]

RCT

Fixed effects

Only one study and to food secure population

435

394

RR 1.03 (0.90, 1.18)

Food secure population


Lassi et al. BMC Public Health 2013 13(Suppl 3):S13   doi:10.1186/1471-2458-13-S3-S13

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