Figures & data
Table 1 Patient demographic and baseline characteristics
Table 2 QCD scores for children and adolescents by their parents/guardians (N=200)
Table 3 SNAP-IV and WFIRS-P scores for children and adolescents by their parents/guardians
Table 4 Internal consistency of the QCD (N=200)
Table 5 Correlation of the QCD with SNAP-IV and WFIRS-P scores (N=200)
Figure S1 Flowchart of patient disposition.
Abbreviations: ADHD, attention-deficit/hyperactivity disorder; BAH, Beijing Anding Hospital; DSM-5, Diagnostic and Statistical Manual of Mental Disorders, 5th Edition; n, number of patients in each category; NBH, Nanjing Brain Hospital; SMHC, Shanghai Mental Health Center; SXH, The Second Xiangya Hospital of Central South University.
Figure S2 Sensitivity and specificity of the QCD questionnaire (A, QCD vs SNAP-IV; B, QCD vs WFIRS-P). QCD cut-off points: QCD from minimum to maximum value by every five points. SNAP-IV cut-point: a mean score of items 1–18 of <1.67 indicates insignificant ADHD symptoms, whereas ≥1.67 indicates significant ADHD symptoms. WFIRS-P cut-off point: the impaired functions <3 vs ≥3.
Abbreviations: AUC, area under the curve; QCD, Questionnaire – Children with difficulties; SNAP-IV, Swanson, Nolan and Pelham IV; WFIRS-P, Weiss Functional Impairment Rating Scale-Parent.
Table S1 Sensitivity, specificity, and accuracy of the QCD questionnaire against SNAP-IV and WFIRS-P (N=200)