Table 4.

Summary of evidence^a,b

^aThe asterisks indicate study quality based on GRADE results:

^****= high quality;

^***= moderate quality;

^**= low quality;

^*= very low quality. The numbers in parentheses indicate the following respectively: positive/neutral/negative/insufficient data.

^bTraffic-light indicator for effectiveness of interventions based on indicated single component: green indicates an effective or beneficial intervention component; amber indicates no intervention component effect, no difference compared with control group, or unclear effect due to insufficient information.

Abbreviations: FV, fruit and vegetables; NK, nutrition knowledge; “–” indicates outcomes that are not reported for that component.