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. Author manuscript; available in PMC: 2015 Feb 19.
Published in final edited form as: Biol Psychiatry. 2008 May 9;64(9):823–827. doi: 10.1016/j.biopsych.2008.04.005

Table 3.

Structural Model Fit Statistics

Model Chi-Square (df) GFI NNFI RMSEA Chi-Square Difference
1. Diagnosis effects through common factor only 545 (221) .866 .975 .0714 —
2. Diagnosis effects through common factor and verbal memory 485 (214) .883 .978 .0643 60a
3. Diagnosis effects through common factor, verbal memory and processing speed 460 (207) .888 .979 .0632 25a

GFI, goodness-of-fit index; NNFI, non-normed fit index; RMSEA, root mean square error of approximation.

a

Chi-square difference significant at p < .001.