How symptoms of prolonged grief disorder, posttraumatic stress disorder, and depression relate to each other for grieving ICU families during the first two years of bereavement

Table 3 Model fit indexes for different models of temporal reciprocal relationships between PGD, PTSD, and depressive symptoms

Model	Sample size	Χ²	# of parameter	AIC	BIC	SABIC	RMSEA	CFI	TLI	SRMR
Model 1	303	167.687	63	15684.632	15918.598	15718.795	0.131	0.967	0.921	0.047
Model 2	303	191.928	57	15696.873	15908.556	15727.782	0.126	0.963	0.927	0.049
Model 3	303	216.584	45	15697.529	15864.647	15721.931	0.112	0.960	0.942	0.079
Model 4	303	302.273	51	15771.318	15916.154	15792.466	0.128	0.942	0.925	0.072

Bold indicates the best fitting
Model 1: Unconstrained model
Model 2: Constrained the autoregressive paths to be equal
Model 3: Constrained the autoregressive and cross-lagged effects to be equal
Model 4: Constrained the autoregressive paths, the cross-lagged paths, and the associations between the three psychological distress symptom constructs measured at the same wave to be equal across the waves
AIC Akaike information criterion, BIC Bayesian information criterion, SABIC sample-size adjusted BIC, RMSEA root-mean-square error of approximation, CFI comparative fit index, TLI Tucker–Lewis index, SRME standardized root-mean-square residual

ISSN: 1364-8535