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Table 4 Fit indices of single factor model for studies separately and for the strict and partial factorial invariance model for all studies together

From: To what extent does the anxiety scale of the Four-Dimensional Symptom Questionnaire (4DSQ) detect specific types of anxiety disorder in primary care? A psychometric study

Study χ2 df p χ2/df RMSEA CFI TLI
Study A 156.6 54 <0.0001 2.9 0.080 0.966 0.958
Study B 115.6 54 <0.0001 2.1 0.082 0.966 0.958
Study C 83.0 54 0.0068 1.5 0.067 0.971 0.964
Study D 88.4 54 0.0022 1.6 0.064 0.986 0.983
Study E 87.6 54 0.0026 1.6 0.052 0.993 0.991
Studies A-E strict factorial invariance model 639.3 406 <0.0001 1.6 0.054 0.983 0.986
Studies A-E partial factorial invariance model 645.7 358 <0.0001 1.8 0.064 0.979 0.981