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. 2022 Aug 10;81(3):304–321. doi: 10.1093/nutrit/nuac057

Table 4.

Summary of evidencea,b

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a

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.

b

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.