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Table 1 Characteristics of the sample studied

From: The genetic influence of the brain-derived neurotrophic factor Val66Met polymorphism in chronic low back pain

Variable

Mean

SD

Age

46.24

14.27

Subjective assessment of stress

5.84

2.39

BMI

26.82

5.14

Total CSI score

49.6

14.39

Total RMDQ score

15.7

5.3

BIP pain intensity

 Worst

6.49

2.59

 Least

3.16

2.45

 Average

5.37

2.26

 Now

4.56

3.02

BIP interference

 General activity

5.83

3.34

 Mood

5.5

3.52

 Walking

5.41

3.32

 Normal work

5.97

3.7

 Relations

3.58

3.34

 Sleep

5.44

3.46

 Enjoyment of life

4.48

3.63

Σ pain-body regions

8.95

6.04

Total Tampa score

45.61

7.82

Total PCS score

2.17

1.2

 PCS rumination

2.68

1.33

 PCS helplessness

1.53

1.31

HADS-anxiety

9.04

3.47

HADS-depression

6.91

3.98

  1. BMI body mass index, BPI the brief inventory of pain, CSI central sensitization inventory, HADS hospital anxiety and depression scale, PCS pain catastrophizing scale, RMDQ Rolland-Morris disability questionnaire, SD standard deviation