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Table 2 Summary of goodness of fit statistics for the tested factor analysis models

From: Using the big data approach to clarify the structure of restricted and repetitive behaviors across the most commonly used autism spectrum disorder measures

Model   χ2 CFI TLI RMSEA SRMR
SCQ
EFA Unidimensional Sample 1 577.668** .903 .871 .071** .069
EFA 2-Factor Sample 1 132.470** .980 .962 .039** .030
EFA 3-Factor Sample 1 16.176 .999 .998 .009 .011
ESEM 3-Factor Sample 2 34.903** .995 .986 .022 .016
  Female Sex/gender 17.098 .997 .992 .017 .017
  Male Sex/gender 29.386* .998 .994 .015 .011
  Age group 1a 42.884** .997 .990 .019 .013
  Age group 2b 43.648* .996 .988 .021 .015
  Age group 3c 30.61** .995 .984 .026 .020
SRS-2
EFA Unidimensional Sample 1 3796.694** .825 .754 .150** .070
EFA 2-Factor Sample 1 1374.531** .937 .864 .112** .034
EFA 3-Factor Sample 1 23.619** .999 .997 .017 .004
ESEM 3-Factor Sample 2 21.284** .999 .997 .016 .004
  Female Sex/gender 27.201** .998 .992 .031 .006
  Male Sex/gender 28.311** .999 .997 .015 .003
  Age group 1a 13.131 .999 .998 .014 .004
  Age group 2b 48.439** .999 .995 .027 .005
  Age group 3c 3.44 .999 .998 .008 .003
ADI-R
Current scores
EFA Unidimensional Sample 1 1951.781** .708 .643 .091** .086
EFA 2-Factor Sample 1 219.452** .973 .958 .031 .029
EFA 3-Factor Sample 1 142.231** .983 .966 .028 .024
ESEM 3-Factor Sample 2 84.499** .991 .980 .024 .003
  Female Sex/gender 36.983 .996 .991 .017 .020
  Male Sex/gender 137.23** .988 .974 .026 .019
  Age group 1a 107.986** .983 .962 .031 .023
  Age group 2b 32.346 .997 .994 .013 .019
  Age group 3c 28.838 .998 .996 .011 .020
ADOS Modules 3 and 4
EFA unidimensional Sample 1 44.137** .915 .756 .083 .035
  Sample 2 42.256** .930 .780 .082 .035
  1. ADI-R, Autism Diagnostic Interview-Revised; CFA, Confirmatory Factor; CFI, Comparative Fit Index; ESEM, Exploratory Structural Equation Modeling; RMSEA, Root Mean Square Error of Approximation; SCQ, Social Communication Questionnaire; SRMR, Standardized Root Mean Square Residual; SRS-2, Social Responsiveness Scale; TLI, Tucker-Lewis Index
  2. *p < .01; **p < .001
  3. aAge Group 1: 2–6 years; bAge Group 2: 7–12 years; cAge Group 3: 13 years and above