Cultural adoption, and validation of the Persian version of the coronary artery disease education questionnaire (CADE-Q): a second-order confirmatory factor analysis

Table 3 The range of acceptable fit indexes for confirmatory factor analysis

Indexes*	Cut off values	First order	Second order
CMIN/df	< 3	2.08	2.08
P value**	≥0.05	0.0001	0.0001
GFI	≥0.90	0.96	0.96
AGFI	≥0.90	0.94	0.94
RFI	≥0.90	0.91	0.91
TLI	≥0.95	0.94	0.94
IFI	≥0.90	0.96	0.96
CFI	≥0.95	0.96	0.96
PCFI	≥0.5	0.70	0.70
PNFI	≥0.5	0.70	0.73
RMSEA	≤0.08	0.04	0.04

* Abbriviations: CMIN/DF Minimum Discrepanscy Funcation by degrees of freedom divided, GFI Good of Fit Index, AGFI Adjusted Good of Fit Index, RFI Relative Fit Index, TLI Tucker –Lewis Index, IFI Incremental Fit Index, CFI Comparative Fit Index, PCFI Parsimonious Comparative Fit Index, PNFI Parsimonious Normed Fit Index, RMSEA Root Mean Square Error of Approximation
** Derived from chi-square test (χ²), which is one of measures for fit indexes in structural equation modeling (SEM). A non-significant result for this test indicates good model fit (i.e., p > .05)

ISSN: 1471-2261