Individual Scale Item Wording and Statistics for the SMART Core Scale and Combined Scale (Core and Supplemental Items).

Core Scale: Cronbach’s alpha = 0.91, mean inter-item correlation = 0.31. Combined Core Scale and Supplemental Items: Cronbach’s alpha = 0.94, mean inter-item correlation = 0.31. Adjusted item-total correlation represents the correlation between each item and the entire scale score excluding that item. 1Variance refers to the square of the standard deviation. The response range was 0–10. Items 1–23 comprise the Core Scale; items 24–34 are the Supplemental Items.