Psychometric assessment of the French European Developmental Coordination Disorder Questionnaire (DCDQ-FE).

Internal consistency of the DCDQ-FE was excellent (Cronbach's alpha = 0.96) and test-retest reliability was good (ICC = 0.956) with no differences between scores obtained at the two sittings (p > 0.05). Differences in scores between children in the clinical and control groups (Z = -6.58, p < 0.001) provide evidence of construct validity. The correlation obtained between DCDQ-FE and MABC-2 scores (Spearman's rho correlation coefficient = 0.802, p < 0.001) supports convergent validity. Using a cut-off of 56, overall sensitivity and specificity were 85.0% and 81.6% respectively (area under the curve = 0.896). The DCDQ-FE is a reliable and valid questionnaire for detecting children who are at risk for DCD in a European-French population of children aged 5 to 15 years old.