Table 5 Multi-group CFA results for the comparisons of individuals after ‘ultra-mild’ TBI and more severe cases51 (N = 1776).

From: Measurement invariance of six language versions of the post-traumatic stress disorder checklist for DSM-5 in civilians after traumatic brain injury

Model

χ2

df

p

CFI

TLI

SRMR

RMSEA

RMSEA 90% CI

ΔCFI

ΔTLI

ΔSRMR

ΔRMSEA

Δχ2

Δdf

Δp

Configural

929.97

328

 < .001

0.996

0.995

0.047

0.046

[0.042; 0.049]

–

–

–

–

–

–

–

Thresholds

942.91

365

 < .001

0.996

0.996

0.047

0.042

[0.039; 0.046]

0.000

0.001

0.000

− 0.004

12.33

37

 > .99

Loadings

952.84

381

 < .001

0.996

0.996

0.047

0.041

[0.038; 0.045]

0.000

0.000

0.000

− 0.001

3.47

16

 > .99

  1. Results are based on the original DSM-5 structure of PTSD12. When the use of the response range was limited, item categories were collapsed. MI models are increasingly restricted and nested. The previous model always serves as a reference. CFA confirmatory factor analysis; CFI comparative fit index; ΔCFI, difference in CFI; CI confidence interval, df degrees of freedom; Δdf, difference in df; p statistical significance of χ2; Δp, statistical significance of Δχ2; RMSEA root mean square of approximation; ΔRMSEA, difference in RMSEA; SRMR standard root mean square residual; ΔSRMR, difference in SRMR; TLI Tucker-Lewis index; ΔTLI, difference in TLI; χ2, overall scaled chi-square statistic; Δχ2, scaled chi-square difference statistic.
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