Table 4.
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The 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.
Traffic-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.