The Construct and Measurement of Perceived Risk of Nonremunerated Blood Donation: Evidence from the Chinese Public

Table 5

Fit index.

Model	Chi-square	df	Chi-square/df	RMSEA	GFI	NFI	IFI	CFI	NNFI
M1	3087.16	260	11.87	0.23	0.64	0.69	0.71	0.71	0.65
M2	1804.28	256	7.05	0.16	0.78	0.82	0.84	0.84	0.81
M3	1117.04	248	4.50	0.08	0.84	0.89	0.91	0.91	0.89

All chi-square tests are statistically significant. RMSEA, root mean square error of approximation; GFI, goodness of fit tests; NFI, normed fit index; IFI, incremental fit index; CFI, comparative fit index; NNFI, nonnormed fit index.