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Table 3 CFA of the WFIRS-P: item-to-factor loadings and fit statistics for one- and six-factor models

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

  Six-factor model One-factor model
  Baseline Follow-up Baseline Follow-up
  Sample 1 Sample 2 Sample 1 Sample 2 Sample 1 Sample 2 Sample 1 Sample 2
Range of factor loadings
Family domain 0.671–0.868 0.612–0.881 0.676–0.896 0.655–0.892 0.611–0.814 0.552–0.818 0.616–0.839 0.595–0.837
Learning and School domain 0.485–0.911 0.449–0.890 0.585–0.900 0.621–0.927 0.347–0.718 0.326–0.713 0.470–0.733 0.512–0.773
Life Skills domain 0.277–0.722 0.268–0.721 0.372–0.730 0.338–0.754 0.199–0.549 0.182–0.492 0.299–0.583 0.272–0.609
Child’s Self-Concept domain 0.789–0.895 0.802–0.862 0.820–0.915 0.859–0.901 0.553–0.623 0.527–0.578 0.589–0.665 0.677–0.735
Social Activities domain 0.428–0.893 0.461–0.878 0.553–0.907 0.577–0.888 0.365–0.788 0.389–0.768 0.473–0.805 0.491–0.790
Risky Activities domain 0.287–0.808 0.289–0.790 0.356–0.858 0.929–0.818 0.200–0.670 0.206–0.623 0.284–0.714 0.930–0.672
Fit statistics
CFI 0.789 0.818 0.861 0.880 0.545 0.579 0.665 0.710
RMSEA 0.094 0.092 0.084 0.085 0.141 0.141 0.134 0.133
TLI 0.929 0.922 0.951 0.954 0.840 0.817 0.875 0.888
Chi-Square 3099.9* 2730.8* 1544.1* 1534.1* 6360.1* 5997.1* 3415.9* 3411.8
df 270 253 206 195 259 248 196 192
  1. CFAconfirmatory factor analysis, CFIcomparative fit index, df degrees of freedom, RMSEA root mean square error of approximation, TLI, Tucker Lewis Index, WFIRS-P Weiss Functional Impairment Rating Scale-Parent Report Form
  2. *p < 0.001