TABLE 3C.

Differences between models’ chi-squares, df, measurement invariance fit indices (configural, metric, strong, and strict), and means, per COVID-19 condition, for all dimensions.

Models	X2(df)	CFI	TLI	RMSEA	SRMR	ΔX2 (Δdf)	Δ X2’s p-value	ΔCFI	ΔRMSEA	ΔTLI
Intrusion
Configural	689.71 (8)	0.991	0.978	0.079	0.015
Metric	865.09 (12)	0.989	0.982	0.072	0.026	175.38 (4)	0.000	0.002	−0.007	−0.004
Strong	995.33 (16)	0.987	0.984	0.067	0.028	130.24 (4)	0.000	0.002	−0.005	−0.002
Strict	1942.93 (21)	0.975	0.977	0.082	0.053	947.60 (5)	1E-202	−0.012	0.015	0.007
Partial strict	1320.00 (20)	0.983	0.983	0.069	0.038	324.68 (4)	5E-69	−0.004	0.002	0.001
Partial strict with correlation between items	1320.38 (21)	0.983	0.984	0.067	0.039	325.05 (5)	0.000	−0.004	0.000	0.000
Means comparison	2726.06 (22)	0.965	0.968	0.095	0.091	1405.68 (1)	0.000	0.018	0.028	0.016
Avoidance
Configural
Metric	22.83 (2)	0.999	0.997	0.028	0.009
Strong	99.31 (4)	0.995	0.992	0.042	0.016	76.47 (2)	0.000	0.004	0.014	0.005
Strict	593.92 (7)	0.967	0.972	0.078	0.050	494.61 (3)	0.000	0.028	0.036	0.020
Partial strict	135.99 (6)	0.993	0.993	0.040	0.016	36.68 (2)	0.000	−0.002	−0.002	−0.001
Means comparison	609.39 (7)	0.967	0.971	0.079	0.050	473.40 (1)	0.000	0.026	0.039	0.022
Numbing
Configural	15.03 (2)	1.000	0.998	0.022	0.002
Metric	22.22 (5)	1.000	0.999	0.016	0.004	7.19 (3)	0.066	0.000	−0.006	−0.001
Strong	279.42 (8)	0.994	0.990	0.050	0.016	257.20 (3)	0.000	0.006	0.034	0.009
Partial strong	98.07 (7)	0.998	0.996	0.031	0.009	75.85 (2)	0.000	0.002	0.015	0.003
Partial strict	133.28 (10)	0.997	0.996	0.030	0.012	35.21 (3)	0.000	−0.001	−0.001	0.000
Partial strict with correlation between items	142.02 (11)	0.997	0.997	0.030	0.012	43.95 (4)	0.000	−0.001	−0.001	−0.001
Means comparison	423.27 (12)	0.990	0.990	0.050	0.034	281.24 (1)	0.000	0.007	0.020	0.007
Hyperactivation
Configural
Metric	2.99 (2)	1.000	1.000	0.006	0.003
Strong	90.09 (4)	0.997	0.996	0.040	0.010	87.10 (2)	0.000	0.003	0.034	0.004
Partial strong	3.00 (3)	1.000	1.000	0.000	0.003	0.00 (1)	0.944	0.000	−0.006	0.000
Partial strict	4.85 (4)	1.000	1.000	0.004	0.003	1.86 (1)	0.173	0.000	0.004	0.000
Means comparison	234.81 (5)	0.993	0.992	0.058	0.035	229.96 (1)	0.000	0.007	0.054	0.008
Depression
Configural
Metric	10.03 (2)	1.000	0.999	0.017	0.004
Strong	69.92 (4)	0.998	0.997	0.035	0.011	59.89 (2)	0.000	0.002	0.018	0.002
Partial strong	13.61 (3)	1.000	0.999	0.016	0.004	3.58 (1)	0.058	0.000	−0.001	0.000
Partial strict	24.80 (5)	0.999	0.999	0.017	0.004	11.19 (2)	0.004	−0.001	0.001	0.000
Means comparison	249.19 (6)	0.994	0.994	0.054	0.035	224.40 (1)	0.000	0.005	0.037	0.005
Generalized anxiety
Configural	470.56 (10)	0.996	0.992	0.058	0.007
Metric	513.92 (14)	0.996	0.994	0.051	0.011	43.36 (4)	0.000	0.000	−0.007	−0.002
Strong	728.15 (18)	0.994	0.993	0.054	0.015	214.23 (4)	0.000	0.002	0.003	0.001
Strict	767.63 (23)	0.994	0.995	0.049	0.016	39.48 (5)	0.000	0.000	−0.005	−0.002
Means comparison	1349.98 (24)	0.989	0.991	0.064	0.058	582.35 (1)	0.000	0.005	0.015	0.004
Health anxiety
Configural	0.00 (0)	1.000	1.000	0.000	0.000
Metric	57.00 (3)	0.999	0.997	0.036	0.012	57.00 (3)	0.000	0.001	0.036	0.003
Partial metric	0.723 (1)	1.000	1.000	0.000	0.001	0.723 (1)	0.395	0.000	0.000	0.000
Partial strong	0.723 (1)	1.000	1.000	0.000	0.001	000.00 (0)	0.000	0.000	0.000	0.000
Partial strict	1.62 (2)	1.000	1.000	0.000	0.001	0.894 (1)	0.344	0.000	0.000	0.000
Partial strict with correlation between items	15.49 (4)	1.000	0.999	0.015	0.002	14.77 (3)	0.002	0.000	0.015	0.001
Means comparison	931.94 (5)	0.986	0.865	0.116	0.063	916.44 (1)	0.000	0.014	0.101	0.134
Somatization
Configural	35.81 (4)	0.999	0.996	0.024	0.006
Metric	131.52 (7)	0.994	0.990	0.036	0.016	95.72 (3)	0.000	0.005	0.012	0.006
Strong	322.88 (10)	0.986	0.983	0.048	0.023	191.35 (3)	0.000	0.008	0.012	0.007
Strict	789.25 (14)	0.965	0.970	0.064	0.040	466.37 (4)	0.000	−0.021	0.016	0.013
Partial strict	508.21 (13)	0.978	0.979	0.053	0.026	185.34 (3)	0.000	−0.008	0.005	0.004
Means comparison	1222.10 (14)	0.945	0.953	0.079	0.057	713.89 (1)	0.000	0.033	0.026	0.026