Table 5 Confirmatory factor analysis of different models of PCL-5

Chi-square (χ²)

428.238

364.026

333.800

df

164

155

149

Chi-square/df

2.611

2.349

2.240

p

 < 0.001

 < 0.001

 < 0.001

Goodness of Fit Index (GFI)

0.886

0.904

0.911

Comparative Fit Index (CFI)

0.923

0.939

0.946

Tucker-Lewis Index (TLI)

0.910

0.925

0.931

Akaike Information Criterion (AIC)

520.238

474.026

455.800

Mean Square Error of Approximation (RMSEA)

0.068

0.062

0.060

Standardized Root Mean Square Residual (SRMR)

0.0478

0.0454

0.0433