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Table 2 Pearson correlations between the SF-36v2 scales, internal consistency estimates, and correlations with the two rotated factor components (N = 1884)

From: Performance of the Dutch SF-36 version 2 as a measure of health-related quality of life in patients with rheumatoid arthritis

 

Observed correlations

Hypothesized

Observed correlations

Scales

PF

RP

BP

GH

VT

SF

RE

MH

Dimension

Physical component

Mental component

PF

(0.93)

       

P

0.85

0.19

RP

0.71

(0.95)

      

P

0.78

0.42

BP

0.63

0.69

(0.88)

     

P

0.83

0.22

GH

0.54

0.60

0.54

(0.79)

    

P/M

0.66

0.38

VT

0.57

0.67

0.60

0.62

(0.79)

   

M/P

0.60

0.59

SF

0.58

0.68

0.61

0.56

0.67

(0.82)

  

M

0.58

0.63

RE

0.47

0.64

0.45

0.46

0.55

0.61

(0.94)

 

M

0.33

0.79

MH

0.37

0.49

0.40

0.46

0.63

0.63

0.65

(0.87)

M

0.18

0.91

  1. Scale internal consistency reliability (Cronbach’s α) is presented in the diagonal. PF, Physical functioning; RP, Role-physical; BP, Bodily pain; GH, General health; VT, Vitality; SF, Social functioning; RE, Role-emotional; MH, Mental health; P, Physical factor content; M, Mental factor content.