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Table 1 Characteristics of studies included in the meta-analysis of overall OA

From: The association between ADAM12 gene polymorphisms and osteoarthritis: an updated meta-analysis

Study author

Year

Country

Ethnicity

Sex

Number of samples

Age case/control (mean)

Genotyping method

Quality score

Cases

Controls

Total

Kerna et al. (1) [37]

2009

Estonian

European

Male

40

60

100

32–55/NR

PCR–RFLP

8

Female

123

155

278

32–55/NR

Rodriguez-Lopez et al. [40]

2009

Spain

European

Male

51

179

230

68 (55–84)/68 (55–94)

Multiplex PCR

6

Female

211

115

326

68 (55–84)/68 (55–94)

UK

European

Male

164

342

506

65 (55–85)/69 (55–89)

Multiplex PCR

6

Female

196

356

552

65 (55–85)/69 (55–89)

Greece

European

Male

20

56

76

72 (62–85)/70 (46–88)

Multiplex PCR

6

Female

139

137

276

72 (62–85)/70 (46–88)

Valdes et al

2004

UK

European

Female

280

469

749

43–67/NR

PCR–SSCP

5

Shin et al. [38]

2012

Korean

Asian

Male

171

882

1053

67.4 ± 7.9/62.7 ± 7.9

TaqMan

7

Female

554

855

1409

67.4 ± 7.9/62.7 ± 7.9

Kerna et al. (2) [26]

2013

Estonian

European

Male

54

66

120

44.35.9/46.1 (5.5)

TaqMan

8

Female

131

143

274

44.35.9/46.1 (5.5)

Lou et al. [39]

2014

China

Asian

Male

58

77

135

63.1 ± 5.2/62.2 ± 4.2

TaqMan

9

Female

94

102

196

63.1 ± 5.2/62.2 ± 4.2

Wang et al. [25]

2015

China

Asian

Male

58

62

120

67.4 ± 4.2/65.9 ± 5.3

iMLDR

9

Female

106

138

244

67.4 ± 4.2/65.9 ± 5.3

Poonpet et al. [41]

2016

Thai

Asian

Male

53

51

104

69.0 ± 8.2/57.3 ± 5.8

HRM-SNP

7

Female

147

149

296

69.0 ± 8.2/57.3 ± 5.8

Aguilar et al. [42]

2020

Mexico

North America

Male

46

68

114

63.53 ± 14.52/55.98 ± 13.13

TaqMan

8

Female

86

96

182

63.53 ± 14.52/55.98 ± 13.13

Haberal et al. [5]

2021

Turkish

European

Male

42

26

48

66 ± 9.8/57.3 ± 11.2

Real-time PCR

8

Female

108

124

232

66 ± 9.8/57.3 ± 11.2

Fatima et al. [24]

2022

Pakistan

Asian

Male

88

100

188

50.45 ± 0.49/49.13 ± 0.53

ARMS‐PCR

8

Female

312

300

612

50.45 ± 0.49/49.13 ± 0.53

  1. NR Not reported