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Table 1 Characteristics of populations and cancer types of the studies included in the meta-analysis

From: The association between hypoxia-inducible factor-1 α gene G1790A polymorphism and cancer risk: a meta-analysis of 28 case–control studies

Author

Year

Country

Ethnicity

Cancer site

Case–control

Gendera

Soure of control

Genotyping method

HWE

Ribeiro AL

2013

Portugal

Caucasian

Breast cancer

96/74

Female

HB

PCR-RFLP

0.00

Alves LR

2012

Brazil

Brazilian

Head and neck cancer

88/40

Mixed

PB

PCR-RFLP

0.69

Li P

2012

China

Asian

Prostate cancer

662/716

Male

PB

TaqMan

0.55

Mera-Menendez F

2012

Spain

Caucasian

Head and neck cancer

121/154

Mixed

PB

PCR–RFLP

0.69

Ruiz-Tovar J

2012

Spain

Caucasian

Pancreatic cancer

59/159

Mixed

PB

PCR-RFLP

0.68

Kuo WH

2012

China

Asian

Lung cancer

285/300

Mixed

PB

PCR–RFLP

0.15

Qin C

2012

China

Asian

Renal cell carcinoma

620/623

Mixed

PB

PCR-RFLP

0.42

Wang X

2011

China

Asian

Pancreatic cancer

263/271

Mixed

PB

PCR-RFLP

0.49

Putra AC

2011

Japan

Asian

Lung cancer

83/110

Mixed

PB

PCR

0.65

Kim YH

2011

Korea

Asian

Other cancer

199/215

Female

PB

PCR-RFLP

0.14

Shieh TM

2010

China

Asian

Head and neck cancer

305/96

Mixed

PB

PCR-RFLP

0.71

Hsiao PC

2010

China

Asian

Other cancer

102/347

Mixed

HB

PCR-RFLP

0.70

Chen MK

2009

China

Asian

Head and neck cancer

174/347

Mixed

PB

PCR-RFLP

0.70

Naidu R

2009

Malaysia

Asian

Breast cancer

410/275

Female

PB

PCR-RFLP

0.90

Konac E

2009

Turkey

Caucasian

Lung cancer

141/156

Mixed

HB

PCR-RFLP

0.94

Li K

2009

China

Asian

Other cancer

87/106

Mixed

PB

PCR

0.76

Munoz-Guerra MF

2009

Spain

Caucasian

Head and neck cancer

74/139

Mixed

PB

PCR-RFLP

0.69

Kim HO

2008

Korea

Asian

Breast cancer

90/102

Female

PB

PCR

0.06

Apaydin I

2008

Turkey

Caucasian

Breast cancer

102/102

Female

PB

PCR-RFLP

0.84

Li H

2007

USA

Mixed

Prostate cancer

1072/1271

Male

PB

PCR-RFLP

0.81

Orr-Urtreger A

2007

Israel

Caucasian

Prostate cancer

402/300

Male

PB

PCR-RFLP

0.95

Fransen K

2006

Sweden

Caucasian

Other cancer

198/258

Mixed

PB

PCR-RFLP

0.77

Konac E-O b

2007

Turkey

Caucasian

Other cancer

49/107

Female

PB

PCR-RFLP

0.00

Konac E-C c

2007

Turkey

Caucasian

Other cancer

32/107

Female

PB

PCR-RFLP

0.00

Konac E-E d

2007

Turkey

Caucasian

Other cancer

21/107

Female

PB

PCR-RFLP

0.00

Ollerenshaw M

2004

UK

Caucasian

Renal cell carcinoma

160/288

Mixed

PB

PCR-RFLP

0.00

Tanimoto K

2003

Japan

Asian

Head and neck cancer

55/110

Mixed

PB

PCR-RFLP

0.65

Clifford SC

2001

UK

Caucasian

Renal cell carcinoma

35/143

Mixed

HB

PCR-RFLP

0.00

  1. aMixed means samples contain both female and male; PB, public based; HB, hospital based; HWE, Hardy-Weinberg equilibrium; PCR, polymerase chain reaction; RFLP, restriction fragment length polymorphism; TaqMan, TaqMan SNP Genotyping Assays.
  2. bcdThe article of Konac E provided data on three kinds of cancers (cervical cancer, endometrial cancer and ovarian cancer), Konac E-O stands for ovarian cancer; Konac E-C stands for cervical cancer; Konac E-E stands for endometrial cancer.