Table 2 Demographic and past or current clinical features of the control patients

21

80

f

AH, DM, hypothyreosis, CHD, inner ear hearing loss left side

0

4

8

42

96

22

75

f

AH, 3× decompression of lumbal spine

 -1

3

8

42

91

23

70

f

AH, CHD, metabolic syndrome, obesity

 -1

4

10

40

96

24

74

f

Attack of gout

0

3

7

48

90

25

78

f

AH, colonic carcinoma

 -1

5

7

42

91

26

54

m

Nucleotomy L4/L5, decompression L5/S1, CHD with coronary by-pass surgery, PAD stented A. ilica communis

0

4

8

41

90

27

57

f

AH, facet joint cyst removal + foraminotomy L5 left

0

3

9

40

91

28

58

m

AH, atrial fibrillation

0

4

7

41

83

29

66

m

AH, gastro-esophageal reflux disease, vertebral instability L4/5, stenosis of neuroforamina L4 right side, decompression surgery of spinal stenosis L4/5 left side

0

n.a.

6

48

n.a.

30

63

f

AH, acute renal, PAD multiple femoropopliteal by-pass surgery in both legs, occluded by-pass right leg, de novo scoliosis L3-L5 with absolute spinal stenosis

0

n.a.

9

43

142

31

52

m

None

0

3

6

43

92

32

63

f

AH, hypothyreosis

0

4

n.a.

44

91

33

72

m

AH, Spondylolisthesis

-1

3

7

40

89

34

59

f

sigma diverticulitis, gastritis, esophageal varices, nodular goiter, alcohol-toxic liver cirrhosis, type 2 DM

 -1

n.a.

7

48

104

35

77

m

AH, DM type 2, CHD, dual coronary by-pass surgery, PAD, by-pass surgery in both legs, lumbar fusion surgery L3-L5 with screw burst L5

0

3

9

44

86

36

72

f

osteoporosis, old compression fracture Th11, Th12, L3, incomplete fracture Th10

0

4

9

41

86

37

60

m

None

0

n.a.

7

43

92

38

72

f

AH, DM type 2, dyslipoproteinaemia, breast cancer, vitamin D deficiency

0

n.a.

7

42

91

39

53

m

AH

 -1

n.a.

11

41

90

40

61

m

AH, aortic valve stenosis, dyslipoproteinaemia, hypothyreosis, CHD

0

3

8

n.a.

86