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Table 1 The characteristics of breast cancer cases and cancer-free controls

From: Association between TIMP-2 gene polymorphism and breast cancer in Han Chinese women

Characteristics

Cases

Control

P value

Number

566

578

 

Age (mean ± SD)

50.91 ± 11.23

49.22 ± 10.11

0.017

smoking and drink

 No

328

  

 Yes

40

  

Age of menarche

 ≤14

145

  

 >14

119

  

Menopausal status

 Premenopausal

104

  

 Postmenopausal

156

  

Procreative times

 <1

104

  

 ≥1

130

  

Tumor size

 <2 cm

105

  

 ≥2 cm

154

  

Tumor site

 left

256

  

 right

241

  

Lymph node involvement

 Negative

201

  

 Positive

197

  

Clinical stage

 III-IV

114

  

 I- II

272

  

Immunohistochemistry results

 ER (−)

108

  

 ER (+)

208

  

 PR (−)

145

  

 PR (+)

166

  

 c-erb(−)

91

  

 c-erb(+)

214

  
  1. ER Estrogen receptor, PR Progesterone receptor