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Table 1 Demographic characteristics between breast cancer patients and non-breast cancer subjects in 2000-2008

From: Association between chronic viral hepatitis infection and breast cancer risk: a nationwide population-based case-control study

Variables

Total N= 9790

Breast cancer

p-value*

   

No N= 7832

Yes N= 1958

 
 

n

(%)

n

(%)

n

(%)

 

Age, years

      

1.00

   20-29

145

(1.5)

116

(1.5)

29

(1.5)

 

   30-39

1305

(13.3)

1044

(13.3)

261

(13.3)

 

   40-49

3630

(37.1)

2904

(37.1)

726

(37.1)

 

   50-59

2665

(27.2)

2132

(27.2)

533

(27.2)

 

   60-69

1205

(12.3)

964

(12.3)

241

(12.3)

 

   ≥ 70

840

(8.6)

672

(8.6)

168

(8.6)

 

Occupation

      

0.001

   White collar

5098

(52.1)

4014

(51.3)

1084

(55.4)

 

   Blue collar

3538

(36.1)

2898

(37.0)

640

(32.7)

 

   Others

1154

(11.8)

920

(11.8)

234

(12.0)

 

Urbanization level

      

0.03

   1

3154

(32.2)

2480

(31.7)

674

(34.4)

 

   2

2928

(29.9)

2335

(29.8)

593

(30.3)

 

   3

1675

(17.1)

1351

(17.3)

324

(16.6)

 

   4

2032

(20.8)

1666

(21.3)

366

(18.7)

 

Region

      

0.24

   North

4762

(48.7)

3782

(48.3)

980

(50.1)

 

   Central

1880

(19.2)

1495

(19.1)

385

(19.7)

 

   South

2330

(23.8)

1888

(24.1)

442

(22.6)

 

   East and Islands

817

(8.4)

667

(8.5)

150

(7.7)

 

Income

      

0.0004

   < 15,000

3116

(31.8)

2481

(31.7)

635

(32.4)

 

   15,000-29,999

5381

(55.0)

4365

(55.7)

1016

(51.9)

 

   ≥ 30,000

1293

(13.2)

986

(12.6)

307

(15.7)

 
  1. Urbanization level: 1 Indicate the highest level of urbanization and 4 the lowest
  2. *Chi-square test