Development and psychometric evaluation of a new brief scale to measure eHealth literacy in people with type 2 diabetes

Table 2 Summary of fit indices in confirmatory factor analysis (CFA)

Model	χ²	df	χ²/df	CFI	SRMR	RMSEA (90% CI)	\(\varDelta\)CFI
Initial model	169.559*	43	3.943	0.945	0.074	0.115 (0.097–0.134)	NA
Modified model 1^a	87.464*	42	2.082	0.980	0.030	0.070 (0.049–0.091)	0.035
Modified model 2^b	78.502*	34	2.309	0.977	0.029	0.077 (0.055–0.099)	0.032

df, degrees of freedom; CFI, comparative fit index; SRMR, standardized root-mean-square residual; RMSEA, root-mean-square error of approximation; \(\varDelta\)CFI, change in CFI compared with the initial model; NA, not available; CI, confidence interval
^a Covariance between the measurement errors of items 16 and 17
^b Model after eliminating item 17
* p < .01

ISSN: 1472-6955