Table 1. Main characteristics of the five European systems studied.

Name of the system	Field of application	Nutrients to limit	Nutrients to encourage	Reference amount	Calculation	Number of categories
Choices v2.2	Labeling (In use)	Added sugars, SFA, Na, Energy	Fiber	100 g	Threshold	>25
Green Keyhole	Labelling (in use)	Added sugars, SFA, Na	Fiber	100 g	Threshold	>25
AFSSA system	Claim Eligibility (draft)	Added sugars, SFA, Na	Fiber, Protein, Vitamin C, Vitamin D, Ca, Fe	100 kcal 100 g	Scoring	Across the board
EU system	Claim Eligibility (draft)	Added sugars, SFA, Na	None	100 g	Threshold	13
FoodProfiler	Advertising to children eligibility (in use)	Total fat, Added sugars, Added Na, SFA, TFA	Fiber, PUFAs, Ca, Fe	100 kcal	Scoring	Across the board

Abbreviation: AFSSA, Agence Française de Sécurité Sanitaire des Aliments; EC, European Commission; SFA, saturated fatty acids; TFA, trans fatty acids.