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. Author manuscript; available in PMC: 2009 Jul 1.
Published in final edited form as: Drug Alcohol Depend. 2008 Mar 6;96(1-2):37–48. doi: 10.1016/j.drugalcdep.2008.01.020

Table 2.

Fit indices for alternative models of therapist MI consistent adherence

Model Model statistics
X2 df p X2/df NFI IFI CFI RMSEA
Overall (all sessions)
 Fundamental MI Skills 24.40 5 .00 5.08 .94 .95 .95 .10
 Advanced MI Skills 16.63 5 .00 3.93 .87 .90 .90 .08
Session 1
 Fundamental MI Skills 8.32 5 .14 1.66 .94 .97 .97 .06
 Advanced MI Skills 14.17 5 .02 2.83 .83 .89 .87 .11
Session 2
 Fundamental MI Skills 7.14 5 .21 1.43 .96 .99 .99 .06
 Advanced MI Skills 2.03 5 .85 0.41 .96 1.07 1.00 .05
Session 3
 Fundamental MI Skills 11.89 5 .04 2.38 .91 .95 .94 .10
 Advanced MI Skills 19.63 5 .00 3.93 .87 .90 .90 .00

Note. In confirmatory factor analysis, the goodness-of-fit of any predicted latent structure is determined by the preponderance of several indices suggesting a well-fitted model. These fit indices include a nonsignificant chi-square value, chi-square degrees of freedom ratios < 2, a normed fit index (NFI), incremental fit index (IFI), and comparative fit index (CFI) > .90, and the root mean square error of approximation (RMSEA) ≤ .10 degrees of freedom (Marsh et al., 1988; Yadama and Pandey, 1995). Statistics meeting these thresholds are bolded.