Moderation Analyses
distress behavior
REGRESSION
The dependent variables were values for each child at each dental visit for mean EDA for means and frequencies (primary outcomes) and video-coded values for distress behavior frequency and duration. Potential effect moderators were dichotomized either at their medians or a clinically meaningful point. Stratified least-squares means and SEs by RDE and SADE and by dichotomized potential moderators were calculated. An interaction term for the potential moderator with SADE and RDE was added to the mixed effects regression model to test the significance of effect moderation (eMethods in Data were analyzed using SAS statistical software version 9.4 (SAS Institute). 