Skip to main content

Table 3 Observed, resampled mean, and estimated eigenvalues of WHOQOL-BREF

From: Psychometric evaluation, using Rasch analysis, of the WHOQOL-BREF in heroin-dependent people undergoing methadone maintenance treatment: further item validation

Eigenvalue #

Observed value

Resampled mean

Estimated value at 95%

Physical domain

  

1

3.41

1.25

1.33

2

1.15

1.15

1.21

3

0.71

1.07

1.11

4

0.60

0.99

1.04

5

0.46

0.92

0.98

6

0.42

0.85

0.91

7

0.24

0.76

0.83

Psychological domain

  

1

3.34

1.22

1.31

2

0.84

1.11

1.16

3

0.73

1.03

1.08

4

0.47

0.96

1.00

5

0.34

0.89

0.94

6

0.27

0.80

0.87

Social domain

  

1

2.65

1.15

1.23

2

0.52

1.04

1.10

3

0.45

0.95

1.00

4

0.37

0.85

0.91

Environment domain

  

1

4.17

1.30

1.38

2

1.06

1.20

1.26

3

0.86

1.13

1.17

4

0.75

1.05

1.09

5

0.64

0.99

1.03

6

0.46

0.93

0.97

7

0.42

0.87

0.91

8

0.34

0.80

0.86

9

0.31

0.72

0.78