RMSEARoot Mean Square Error of Approximation
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Goodness-of-Fit Indices From Confirmatory Factor Analysis of the Chinese Version of the Insomnia Severity Index in the Undergraduates Model [chi square](df) [chi square]/df RMSEA CFI Model 1: one factor 609.
2]/df CFI SRMR RMSEA Recommended values -- -- <3.
Standard guidelines or 'rules-of-thumb' generally recommend that an RMSEA of less than .
RMSEA = [square root of (max ([chi square] - df,0)/df(n - 1))]
According to Kelloway (1998) and Hu and Bentler (1999), RMSEA values of 0.
2]/sd, RMSEA, SRMR, NFI, NFFI and CFI values of the Questionnaire were found to be within acceptable agreement limits (Schermelleh et al.
Scores on the goodness-of-fit indexes for the two-factor model were good for the RMSEA and the GFI, and very good for the CFI and NNFI.