Table 1.

Model fit statistics for alternative models of ICD-11 PTSD based on the ITQ-CA (n = 111)

Model	χ2	df	p	CFI	TLI	RMSEA (90% CI)	SRMR	BIC
6-factor	54.567	39	0.050	0.965	0.940	0.060 (0.000–0.312)	0.043	4067.077
2nd Order	55.663	47	0.181	0.980	0.972	0.041 (0.000–0.078)	0.045	4033.423

χ², Chi-square Goodness of Fit statistic; df, degrees of freedom; p, probability value; CFI , Comparative Fit Index; TLI, Tucker Lewis Index; RMSEA (90% CI), Root-Mean-Square Error of Approximation with 90% confidence intervals; SRMR , Standardized Square Root Mean Residual; BIC, Bayesian Information Criterion