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Table 1 Properties of the 21 case–control studies included in meta-analysis

From: The associations between the polymorphisms in the CTLA-4gene and the risk of Graves’ disease in the Chinese population

Author

Publication year

Province

Case age(year)

Case number

Control number

Genotyping method

Polymorphisms

Chong, K K [10]

2008

Hong Kong

<16

177

151

PCR-RFLP

−318C/T, CT60

Du, Y T [11]

2005

Tianjin

-

96

60

PCR-PFLP

+49A/G, -318C/T

Guo, Z Q [12]

2010

Shandong

44.17 ± 1.54

102

100

PCR-PFLP

+49A/G, -318C/T

Han, S Z [2]

2006

Chongqing

-

263

196

PCR-PFLP

+49A/G, -318C/T, CT60

Jiang, B R [13]

2005

Shandong

43.8 ± 13.5

98

95

PCR-PFLP

+49A/G

Kang, Y Z [14]

2010

Ningxia

43.7 ± 11.5

61

60

PCR-PFLP

−318C/T

Shen, F X [15]

2005

Zhejiang

36.0 ± 12.3

107

57

PCR-PFLP

+49A/G

Tsai, S T [16]

2008

Taiwan

10.2 ± 3.3

189

620

PCR-RFLP

CT60

Wang, L [17]

2001

Shandong

40 ± 13

87

84

PCR-PFLP

+49A/G

Wang, P W [18]

2007

Taiwan

39 ± 13

208

192

PCR-RFLP

+49A/G, CT60

Wang, Q H [19]

2003

Zhejiang

45.7 ± 9.5

64

28

PCR-PFLP

+49A/G

Wang, S Q [20]

2010

Shandong

41.5 ± 28.5

90

90

PCR-PFLP

+49A/G

Weng, Y C [21]

2005

Taiwan

34.0 ± 11.8

107

101

PCR-PFLP

+49A/G

Yang, J [22]

2012

Xi’an

34.14 ± 12.23

303

215

PCR-PFLP

+49A/G

Yao, B [23]

2005

Guangdong

36.6 ± 12.8

120

123

PCR-PFLP,

PCR-SSLP

+49A/G

Yu, Q L [24]

2006

Guangdong

45 ± 11

100

100

PCR-PFLP

+49A/G

Yu, Z Y [25]

2008

Xi’an

36.7 ± 13.28

125

126

PCR-RFLP

+49A/G

Zhang, H [26]

2010

Shandong

-

211

85

PCR-PFLP

−318C/T

Zhang, J L [27]

2008

Shandong

37.8 ± 13.3

186

100

PCR-PFLP

+49A/G

Zhang, Q [28]

2006

Zhejiang

-

89

60

PCR-RFLP

+49A/G, -318C/T

Zhao, S X [5]

2010

Shandong, Suzhou, Guangdong, Fujian

-

2640

2204

Mass-Array™

+49A/G