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Table 1 Characteristics of the studies of GDF5 rs143383 polymorphism included in the meta-analysis

From: Association between GDF5 +104T/C polymorphism and knee osteoarthritis in Caucasian and Asian populations: a meta-analysis based on case-control studies

First author

Year

Ethnicity

Numbers

RA/controls (allele)

HWE (P)

OA

Controls

T

C

 

Southam et al.a

2007

Caucasian

349

822

450/1020

248/624

0.262

Southam et al.a

2007

Caucasian

274

1196

340/1441

208/951

0.550

Miyamoto et al.a

2007

Asian

718

861

1131/1276

305/446

0.966

Miyamoto et al.b

2007

Asian

313

485

491/681

135/289

0.283

Tsezou et al.

2007

Caucasian

251

268

316/323

186/213

0.669

Valdes et al.

2009

Caucasian

735

654

987/805

483/487

0.320

Cao et al.

2010

Asian

276

298

415/431

137/165

0.360

Tawonsawatruk et al.

2011

Asian

103

103

117/113

63/93

0.424

Mishra et al.

2013

Asian

300

300

378/328

222/272

0.188

  1. Letters a and b denote an independent study in one article
  2. HWE Hardy-Weinberg equilibrium