Outcome variables
To test the effect of the NG label on beverages purchased we quantified the weighted (by the number of servings) average NG score of beverages purchased, after recoding each letter to a number value: A = 4, B = 3, C = 2, and to D = 1. For all foods and beverages, we relied on the weighted (by the number of servings) average Nutri-Score (NS) value given that it is a valid measure of overall diet quality [We also assessed nutritional quality of beverages and F&B purchased, in terms of each nutritional aspect of interest. The nutrient-specific outcomes include the weighted (by the number of servings) average grams of sugar per serving (primary), average saturated fat per serving, calories per serving, and total sugar, saturated fat, and calories of the grocery baskets. Measured per-serving and total changes allows us to test whether the label may improve diet quality per serving but increase total number of servings, nutrients, and calories purchased [