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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