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. Author manuscript; available in PMC: 2013 Jan 1.
Published in final edited form as: Heart Lung. 2011 Jul 27;41(1):44–56. doi: 10.1016/j.hrtlng.2011.05.003

TABLE 5. Three-Factor / 7-Indicator Measurement Model: CFA χ2 Statistics and Fit Indices.

Diagnosis Study

Day		 n Model

χ2 		dfb p Relative

χ2 		CFI NNFI SRMR RMSEA
HF 1 119 7.91 7 0.34 1.13 0.99 0.99 0.03 0.03
HF 0 97 9.92 6 0.13 1.65 0.98 0.97 0.03 0.08
COPDa ED 100 10.00 6 0.12 1.67 0.96 0.94 0.05 0.08

CFA, confirmatory factor analysis; HF, heart failure; COPD, chronic obstructive pulmonary disease; ED, emergency department; Study Day 1, dyspnea ratings on day of HF study enrollment; Study Day 0, recall dyspnea rating for day of admission obtained on Study Day 1; df, degrees of freedom for model χ2; relative χ2, model χ2/df; CFI, comparative fit index; NNFI, non-normed fit index; RMSEA, root mean square error of approximation.

a

Data from ref 23.

b

The df for the maximum likelihood mean- and variance-adjusted (MLMV) χ2 are estimated and rounded to the nearest integer; hence, the df for the same model can vary.