Table 1 The General Characteristics of All Studies Included in this Meta-Analysis.

From: Association between C4, C4A, and C4B copy number variations and susceptibility to autoimmune diseases: a meta-analysis

Refs

Year

Country

Ethnicity

Case/Control

Disease

Typing teaching

Study design

Liu et al.22

2011

China

Asian

624/160

GD

TaqMan

Case-control,sex-, ethnic-, matched

Lv et al.23

2012

China

Asian

924/1007

SLE

TaqMan

Case-control,age-, ethnic-, matched

Kim et al.21

2013

Korea

Asian

308/307

SLE

TaqMan

Case-control,age-, ethnic-, matched

Yang et al.17

2007

America

Caucasian

216/517

SLE

RFLP

Case-control,age-, ethnic-, matched

Boteva et al.24

2012

UK

Caucasian

501/719

SLE

Four-digit genotyping

Case-control, ethnic-, matched

Boteva et al.24

2012

Spanish

Caucasian

464/449

SLE

Four-digit genotyping

Case-control, ethnic-, matched

Cleynen et al.25

2015

Belgium

Caucasian

1887/1032

CD

TaqMan

Case-control, ethnic-, matched

Hou et al.19

2014

China

Asian

1027/2083

VKH

TaqMan

Case-control,age-, ethnic-, matched

Rigby et al.26

2012

America

Caucasian

160/51

RA

Southern blot analyses

Case-control,age-, ethnic-, matched

Rigby et al.26

2012

America

Caucasian

88/51

non-RA rheumatism

Southern blot analyses

Case-control,age-, ethnic-, matched

Pereira et al.27

2016

Brazil

Caucasian

90/200

jSLE

TaqMan

Case-control, ethnic-, matched

Pereira et al.27

2016

Brazil

Caucasian

170/200

SLE

TaqMan

Case-control, ethnic-, matched

Hou et al.18

2013

China

Asian

905/1238

BD

TaqMan

Case-control,age-, ethnic-, matched

Hou et al.18

2013

China

Asian

205/1238

AS + AAU+

TaqMan

Case-control,age-, ethnic-, matched

Lintner et al.28

2016

America

Caucasian

95/500

JDM

Southern blot analyses

Case-control,age, ethnic-, matched

Chen et al.29

2016

China

Asian

999/1347

SLE

TaqMan

Case-control, ethnic-, matched