Important: This dataset displays data scores for the 22-item DiPS. Following analysis in the DiPS validation study, the number of items in the DiPS was reduced to 13. For researchers seeking to conduct secondary analysis on this dataset, it is imperative that the 13-item DiPS is analysed, not all 22 items. To do this, please select the following 13 items: dips2, dips4, dips6, dips7, dips8, dips9, dips10, dips12, dips13, dips14, dips17, dips21, dips22.