Table 4: Values of the indices of goodness of the global adjustment of the original and M12 models.

Fit Index Parameter Original Model M12
χ2 1105.56 (df 576, p ≤ 0,01) 1072.59 (df 576, p ≤ 0,01)
χ2/ df Value lower than 3 1.92 1.86
CFI Value higher than 0.90 0.91 0.99
NNFI Value higher than 0.90 0.90 0.99
SRMR Value lower than 0.08 0.07 0.06
RMSEA Value ranging 0.06–0.08 0.05 0.07