Table 5

Maximum likelihood goodness-of-fit indices for confirmatory factor models

Original Six-Item ASC


Invariance

χ2

df

p

Δχ2

df

p

RMSEA

CFI

NNFI


Form

32.0

16

.01

.055

.992

.985

Slope

33.7

22

.05

1.7

6

.95

.038

.994

.992

Intercept

39.9

28

.07

6.2

6

.40

.035

.994

.994

Item Error

46.1

34

.08

6.2

6

.40

.033

.994

.995

Covariance

46.5

35

.09

0.4

1

.53

.033

.994

.995


Revised Five-Item ASC (children's health item excluded)


Invariance

χ2

df

p

Δχ2

df

p

RMSEA

CFI

NNFI


Form

11.2

8

.19

.033

.998

.996

Slope

15.8

13

.26

4.6

5

.47

.024

.999

.998

Intercept

21.4

18

.26

5.6

5

.35

.015

.999

.998

Item Error

30.5

23

.14

9.1

5

.11

.030

.996

.997

Covariance

30.9

24

.16

0.4

1

.53

.029

.997

.997


χ2 is the chi-square value for the given model with degrees of freedom, df, and probability, p. Δχ2 is the difference in chi-square between the given model and the previous one. RMSEA is the Root Mean Square Error of Approximation, CFI is the Comparative Fit Index, and NNFI is the Non-Normed Fit Index. Listwise deletion of missing values was used for all of the models.

Gotay and Pagano Health and Quality of Life Outcomes 2007 5:15   doi:10.1186/1477-7525-5-15

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