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Table 2 Distribution of Genotypes and COL9A3 trp3 Polymorphisms Among Cases and Controls

From: Association of COL9A3 trp3 polymorphism with intervertebral disk degeneration: a meta-analysis

Study ID

Year

Continent

Gender

Case

Control

Trp3 positive

Trp3 negative

Trp3 positive

Trp3 negative

Bagheri et al. [18]

2016

Asia

male

12

21

2

21

female

17

58

8

26

overall

29

79

10

47

Solovieva et al. [14]

2006

Europe

male

15

62

8

47

Kales et al. [27]

2004

Europe

male

6

62

1

46

female

3

34

4

51

overall

9

96

5

97

Paassita et al. [17]

2001

Europe

unknown

40

131

30

291

Kelempisioti et al. [30]

2011

Europe

overall

43

249

52

194

Matsui et al. [28]

2004

America

overall

7

90

0

10

Eskola et al. [21]

2010

Europe

male

2

28

14

59

female

7

29

17

64

overall

9

57

31

123

Rathod et al. [22]

2012

Asia

male

3

62

7

60

female

2

33

0

33

overall

5

95

7

93

Zhu et al. [29]

2011

America

male

3

11

0

2

female

3

9

0

4

overall

6

20

0

6

Jim et al. [23]

2005

Asia

overall

0

290

0

514

Toktas et al. [11]

2015

Europe

male

5

70

0

25