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Table 3 Principal component analysis and eigenvalues

From: Only cervical vertebrae C0-C2, not C3 are relevant for subgrouping migraine patients according to manual palpation and pain provocation: secondary analysis of a cohort study

C1 – C3

C1 – C2

Component

Initial Eigenvalues

Component

Initial Eigenvalues

Eigenvalue

% of Varianz

Cummulated %

Eigenvalue

% of Varianz

Cummulated %

1

2.46

40.9

40.9

1

2.08

52.1

52.1

2

1.15

19.2

60.1

2

0.90

22.7

74.8

3

0.92

15.3

75.5

3

0.60

15.1

89.9

4

0.65

10.8

86.2

4

0.41

10.1

100

5

0.52

8.6

94.9

    

6

0.30

5.2

100

    

Cronbach´s Alpha

0.71

  

Cronbach´s Alpha

0.69

  
  1. The table presents the principal component analysis of the results of manual palpation of segments C1—C3 (left) and segments C1—C2 (right) and the corresponding Cronbach's alpha value. (C1/C2/C3: first/second/third cervical spine segment)
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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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