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Table 6 Factor analysis with varimax rotation of the 16 items of the Thai GO-QOL

From: Development and psychometric properties of the Thai Graves’ ophthalmopathy quality of life (GO-QOL) questionnaire

  

4 Factors

result

 

2 Factors

result

Thai GO-QOL

Factor 1

Factor 2

Factor 3

Factor 4

Factor 1

Factor 2

Question 1

0.17

0.11

0.04

0.89

0.10

0.54

Question 2

0.34

−0.01

0.03

0.82

0.02

0.65

Question 3

0.70

0.34

0.08

0.31

0.29

0.79

Question 4

0.74

0.15

0.28

0.24

0.32

0.75

Question 5

0.78

0.11

0.08

−0.03

0.15

0.67

Question 6

0.85

0.10

0.03

0.03

0.10

0.77

Question 7

0.76

0.05

−0.09

0.20

−0.02

0.78

Question 8

0.62

0.18

0.08

0.27

0.19

0.68

Question 9

−0.14

0.09

0.85

−0.01

0.71

−0.21

Question 10

0.01

0.39

0.75

0.24

0.83

0.07

Question 11

0.15

0.85

0.19

0.11

0.70

0.26

Question 12

0.30

0.12

0.77

−0.12

0.60

0.13

Question 13

0.18

0.86

0.16

0.02

0.68

0.25

Question 14

0.19

0.87

0.20

0.07

0.72

0.28

Question 15

0.12

0.34

0.69

0.29

0.75

0.20

Question 16

0.22

0.48

0.56

−0.15

0.74

0.12

Eigenvalues

6.09

2.78

1.42

1.35

6.09

2.78

% of Variance

38.12

17.43

8.91

8.47

38.12

17.43

Cumulative%

38.12

55.55

66.46

72.93

38.12

55.55

  1. Eigenvalues = the total variance explained by each factor
  2. % of Variance = percentage of the total variance explained by each factor
  3. Boldface numbers = high factor loading