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Table 1 Factor loadings on the four factors in 324 participants

From: Headache symptoms from migraine patients with and without aura through structure-validated self-reports

 

Items

Factor

1

2

3

4

Somatic/Aura Symptoms

I felt my vision blurred when headache attacked.

.71

.10

.15

.10

There were black spots in my vision when headache attacked.

.70

.16

.08

.12

I talked less frequently when headache attacked.

.68

.15

.10

.00

I lost physical balance control when headache attacked.

.64

.22

.11

.20

I lost consciousness when headache attacked.

.63

.01

.24

−.16

I was sensitive to strong sound when headache attacked.

.49

.22

.11

.17

I felt abdominal pains when headache attacked.

.49

.23

.06

.24

Gastrointestinal and Autonomic Symptoms

I had a poor appetite when headache attacked.

.10

.82

.05

.08

I looked pale when headache attacked.

.24

.71

.26

−.01

I felt weak when headache attacked.

.16

.60

.18

.31

I felt nausea when headache attacked.

.27

.57

.18

.18

I was sensitive to strong light when headache attacked.

.21

.47

.31

.20

I sweated a lot when headache attacked.

.34

.41

.19

.19

Tightness and Location Features

I felt that my head was hooped by a ribbon when headache attacked.

.22

.16

.75

.05

I once felt that my head was hooped.

.07

.13

.75

.14

I felt that my head was pressed by a big stone when headache attacked.

.31

.09

.65

.21

I felt I was wearing a hat when headache attacked.

.28

.26

.64

.08

My whole head was extremely painful when headache attacked.

−.03

.15

.57

.24

Headache location migrated during my headache period.

.16

.09

.41

.10

I felt throbbing over my head when headache attacked.

.00

.24

.41

.39

My neck was also painful when headache attacked.

.33

−.05

.41

.36

Prodromal/Aggravating Symptoms

I felt fatigue for a period before headache attacked.

.11

.16

.08

.78

I had difficulty in concentrating for a period before headache attacked.

.19

.15

.08

.76

I yawned repetitively for a period before headache attacked.

.23

.05

−.03

.72

I was often upset about my life or study/work.

−.01

.10

.26

.56

I was easily irritated when headache attacked.

.11

.10

.30

.55

Insomnia intensified my headache.

−.08

.20

.36

.55

  1. Loadings higher than 0.40 are presented in bold for clarity
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BMC Neurology

ISSN: 1471-2377

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