Table 2.

Confirmatory factor analyses fit indices for the six PTSD models

Model	χ2	df	CFI	TLI	RMSEA (90% CI)	SRMR	BIC	AIC
DSM-5	251.33	164	0.92	0.91	0.057 (0.042–0.070)	0.060	10767.47	10562.48
Dysphoria	243.94	164	0.93	0.92	0.054 (0.039–068)	0.061	10758.37	10553.38
Dysphoric arousal	229.90	160	0.94	0.93	0.051 (0.036–0.066)	0.058	10762.35	10544.94
Externalizing behaviours	219.50	155	0.94	0.93	0.050 (0.034–0.065)	0.054	10776.53	10543.59
Anhedonia	214.89	155	0.95	0.94	0.048 (0.031–0.063)	0.055	10770.15	10537.20
Hybrid	203.62	149	0.95	0.94	0.047 (0.029–0.063)	0.052	10788.40	10536.82

CFI, comparative fit index; TLI, Tucker–Lewis index; RMSEA, root mean square error of approximation; SRMR, standardized root mean square residual; BIC, Bayesian information criterion; AIC, Akaike information criterion.