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. 2017 Feb 27;19(2):e53. doi: 10.2196/jmir.5998

Table 9.

Measurement invariance of the eHealth Literacy Scale (eHEALS) across New Zealand, the United States, and the United Kingdom.

Model	χ²	df	P value	RMSEA^a	PCLOSE^b	Δχ²	Δ df	Significance	CFI^c	ΔCFI	Critical N
Model	χ²	df	P value	RMSEA^a	PCLOSE^b	Δχ²	Δ df	Significance	CFI^c	ΔCFI	.05	.01
1) Configural invariance	128.363	48	<.001	.041	.954	N/A^d	N/A	N/A	.986	N/A	505	571
2) Metric invariance	149.262	58	<.001	.040	.983	20.899	10	.022	.984	.002	512	573
3) Scalar invariance	203.237	74	<.001	.042	.971	74.874	26	<.001	.978	.008	466	515

^aRMSEA: root mean square error of approximation.

^bPCLOSE: probability of close fit.

^cCFI: comparative fit index.

^dN/A: not applicable.