Table 3.

Measurement invariances of the Coronavirus Anxiety Scale across age and gender groups

Model	χ2	df	Δ	p value	CFI	ΔCFI	RMSEA	ΔRMSEA	SRMR	ΔSRMR
Age group (18 to 29 vs. 30 and older)
Configural	32.843	8			0.986		0.065		0.0214
Metric	41.281	13	8.438	0.13	0.984	0.002	0.055	− 0.010	0.0256	0.0042
Scalar	52.448	18	11.167	0.05	0.981	0.003	0.051	− 0.004	0.0255	− 0.0001
Gender (male vs. female)
Configural	14.476	8			0.996		0.033		0.0164
Metric	24.618	13	10.142	0.07	0.993	0.003	0.035	0.002	0.0228	0.0064
Scalar	53.230	18	28.612	< 0.01	0.980	0.013	0.052	0.017	0.0259	0.0031
Partial scalar	40.152	17	15.534	< 0.01	0.987	0.006	0.043	0.008	0.0251	0.0023

df, degrees of freedom; CFI, comparative fit index; RMSEA, root mean square error of approximation; SRMR, standardized root mean square residual