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Table 5 Comparison of mean change in WFIRS-P domain scores and summary index between responders and non-responders

From: Psychometric validation of the Weiss Functional Impairment Rating Scale-Parent Report Form in children and adolescents with attention-deficit/hyperactivity disorder

  Sample 1 Sample 2
  Respondera Non-responder T-statistic p-value Respondera Non-responder T-statistic p-value
Scale (n = 647) (n = 277) (n = 644) (n = 300)
Family domain −0.48 (−0.6) −0.20 (−0.5) 6.5 <0.0001 −0.51 (−0.6) −0.16 (−0.5) 8.2 <0.0001
Learning and School domain −0.63 (−0.6) −0.21 (−0.5) 9.6 <0.0001 −0.60 (−0.6) −0.15 (−0.6) 10.5 <0.0001
Life Skills domain −0.38 (−0.5) −0.17 (−0.4) 5.9 <0.0001 −0.39 (−0.5) −0.19 (−0.5) 5.8 <0.0001
Child’s Self-Concept domain −0.37 (−0.7) −0.19 (−0.7) 3.5 0.0003 −0.34 (−0.7) −0.09 (−0.7) 5.0 <0.0001
Social Activities domain −0.38 (−0.6) −0.18 (−0.5) 5.1 <0.0001 −0.38 (−0.6) −0.13 (−0.6) 6.2 <0.0001
Risky Activities domain −0.22 (−0.3) −0.12 (−0.3) 4.2 <0.0001 −0.22 (−0.3) −0.09 (−0.3) 5.7 <0.0001
WFIRS-P summary index −0.42 (−0.4) −0.17 (−0.3) 8.9 <0.0001 −0.42 (−0.4) −0.15 (−0.3) 9.8 <0.0001
  1. aIndividuals were classified as a responder if their ADHD-RS-IV total score improved by 30 % or more from baseline to the follow-up assessment and the value on the CGI-I was at least a 1 (’very much improved’) or 2 (‘much improved’) at the follow-up assessment
  2. ADHD-RS-IVADHD Rating Scale Version IV, CGI–I Clinical Global Impression–Improvement, WFIRS-P Weiss Functional Impairment Rating Scale-Parent Report Form