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Table 3 Confirmatory factor analysis results: estimations by generalized least squares (GLS)*

From: Confirmatory factor analytical study of the WHOQOL-Bref: experience with Sudanese general population and psychiatric samples

Structural fit indices

Using 6F & 5F models from 623 general population subjects

Applying WHO 4- & 6-domain models

 

General popn subjects

Psychiatric patients

Family caregivers

Gen popn subjects

Psychiatric pts

Family caregivers

 

6F model

5F model

6F model

5F model

6F model

5F model

4d model

6d model

4d model

6d model

4d model

6d model

No of parameters

57

56

58

57

57

57

52

54

51

53

52

54

Discrepancy (X2)

936.6

925.8

638.4

623.4

688.0

717.4

859.3

947.6

548.9

556.4

611.9

664.4

DF

295

297

299

297

298

300

250

249

252

253

251

250

Discrepancy/DF

3.18

3.12

2.14

2.09

2.31

2.39

3.44

3.81

2.18

2.19

2.44

2.66

GFI

0.88

0.89

0.84

0.84

0.82

0.82

0.89

0.87

0.85

0.84

0.83

0.81

Adjusted GFI

0.86

0.86

0.81

0.81

0.79

0.78

0.86

0.85

0.82

0.82

0.79

0.78

AIC

1050.6

1037.8

754.4

737.4

802.0

831.4

963.3

1053

650.9

662.4

715.9

772.4

RMSEA

0.059

0.058

0.062

0.061

0.066

0.068

0.063

0.067

0.063

0.063

0.069

0.075

  1. NOTES: DF = degrees of freedom; 6F mod = 6-factor model; 5F mod = 5-factor model; 4d mod = 4-domain model; 6d mod = 6-domain model; GFI = goodness of fit index; FI = fit index; RMSEA = root mean square error; AIC = Akaike index; Gen popn = general population
  2. * Ideal fit indices are: Discrepancy/Df < 5; GFI, AGFI ≥ 0.9; RMSEA = 0.05 – 0.08; lower AIC