Table 4.

Goodness-of-fit indices of the eHEALS^a 1-, 2-, and 3-factor structure model.

Model	Chi square (df)	RMSEAb (90% CI)	SRMRc	CFId	TLIe
Model 1f	1649.256 (20)	0.247 (0.237-0.257)	0.045	0.966	0.952
Model 2g	1482.130 (19)	0.240 (0.230-0.251)	0.040	0.969	0.955
Model 3h	510.925 (17)	0.148 (0.137-0.159)	0.019	0.990	0.983

^aeHEALS: eHealth literacy scale.

^bRMSEA: root mean square error of approximation.

^cSRMR: standardized root mean square residual.

^dCFI: comparative fit index.

^eTLI: Tucker-Lewis index.

^f1-factor model: Factor 1:1-8 [4].

^g2-factor model: Factor 1: 1-5, 8; Factor 2: 6, 7 [15].

^h3-factor model: Factor 1: 1, 2; Factor 2: 3-5; Factor 3: 6-8 [9].