... parents and children were returned to the teachers. The schoolnurse assisted in the information gathering process and in the data collection tasks. The self -report instruments werecompleted in the ... from 0.53 to0.78 for the subscales, and 0.82 for the total scales in the Norwegian study [3], and 0.70 and higher for the sub-scales and 0.80 for the total scale in other studies [1,26].Correlations ... contributed to the study design, statis-tical analysis, interpretation of data and revision of the manuscript. RS contributed to statistical analysis, inter-pretation of data and revision of the manuscript....