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Table 7 Selected breast cancer risk factors in recent Chinese migrants and postmenopausal Chinese women living in urban China

From: Risk factors for breast cancer in postmenopausal Caucasian and Chinese-Canadian women

 

Mean (SD)

 

Mean (SD)

 
 

Recent Chinese Migrants

Postmenopausal

 

Recent Chinese Migrants

Postmenopausal

 
 

From Mainland China

Chinese Women

P a

From Hong Kong

Chinese Women

P a

 

in This Study

Living in Shanghaib

 

in This Study

Living in Hong Kong

 

High school or higher (% yes)

74.2

64.0

0.12

74.4

NAc

NA

Age at menarche (years)

14.6 (1.8)

15.0 (2.0)

0.03

12.8 (1.9)

15.1 (2.3)d

<0.001

Age at first live birth (years)

25.2 (3.6)

24.0 (4.0)

0.001

26.9 (3.9)

NAc

NA

Number of live births

2.2 (1.1)

2.3 (1.0)

0.30

2.1 (1.4)

2.0 (2.0)e

0.59

Age at natural menopause (years)

50.0 (3.4)

48.0 (5.0)

<0.001

50.0 (3.2)

49.4 (3.4)c

0.08

BMI (kg/m2)

23.2 (3.0)

24.2 (3.6)

0.002

22.6 (3.2)

22.2 (3.8)e to 23.6 (3.4)d

0.58f

  1. a P values were based on chi-square significance test for educational attainment and t-tests for the rest of the variables.
  2. b Data obtained from reference 10.
  3. c Data is not available.
  4. d Data obtained from reference 9
  5. e Data obtained from reference 8
  6. f Weighted mean was used for postmenopausal Chinese women living in Hong Kong when making the comparison.