2.4.2. Estimation
WL
REGRESSION, REGRESSIONS
To test the hypotheses, we employed ordinary least squares (OLS) regressions with robust standard errors. The regression specification is as follows:To gain further insight into what is driving differential effectiveness, we quantified the following across the arms: (1) the proportion of products in a grocery basket that are subject to the warning labels (and labeled in the WL arm); (2) the weighted average NS points of the products that are subject to the warning labels; and (3) the weighted average NS points of the products that are 