Table 1 Principal component analysis with varimax rotation, forced three-factor structure.

0.21

0.05

0.94

0.89

0.11

0.15

0.80

-0.24

0.10

0.75

0.42

0.14

0.69

0.48

0.17

0.71

0.37

0.33

0.01

0.78

-0.09

0.24

0.68

0.35