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Table 2 Goodness of fit summaries for the four models derived by Confirmatory Factor Analysis (CFA)

From: Relationship between three palliative care outcome scales

 

Model 1

Model 2

Model 3

Model 4

Independence

1076

1076

717

279

Chi-square

(378 df)

(378 df)

(171)

(55 df)

Average standardised residuals

0.11

0.09

0.09

0.09

Average off-diagonal st. residuals

0.12

0.10

0.10

0.11

Chi-squared fit

534.7

520

213

67.7

(df)s

(347 df)

(347 df)

(150 df)

(43)

P-value

0.00001

0.00001

0.001

0.01

Free parameters

59

57

40

23

Akaike's information criterion (AIC)

-193

-173

-87

-18

Bozodgan's version of AIC (C-AIC)

(-1437)

(-1424)

(-627)

(-173)

Comparative Fit Index (CFI)

0.73

0.75

0.89

0.90

Normed Fit Index (NFI)

0.50

0.52

0.70

0.76

Non-normed Fit Index (NNFI)

0.71

0.73

0.87

0.86

  1. Model 1 comprised the basic 3 factors: EQoL, POS and HOPE. Model 2 was 2 factors: EQoL, and POS and HOPE combined. Model 3 was 4 factors: items relating to self-sufficiency, positivity, symptoms and spiritual. Model 4 was 3 factors, items relating to self-sufficiency, positivity and symptoms.
  2. AIC and CAIC measure degree of fit. The smaller, the better the fit. The larger are NFI, NNI and CFI, the better the fit, with an upper value of 1.