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Table 1 Subject characteristics for 4581 children of different ethnicities in the Generation R Study

From: The role of early life factors in the development of ethnic differences in growth and overweight in preschool children: a prospective birth cohort

  

Total (n = 4581)

Dutch (n = 3126)

Turkish (n = 474)

Moroccan (n = 351)

Cape Verdean (n = 199)

Antillean/Surinamese Creole (n = 295)

Surinamese-Hindustani (n = 136)

p-valuea

Socio-demographic variables

        

Mothers education

% low

9.0

2.6

32.8

24.2

21.8

12.5

14.1

<0.001

 

% middle

43.3

34.7

53.7

62.1

66.3

70.6

71.9

 
 

% high

17.7

62.7

13.5

13.7

11.9

17.0

14.1

 

Household income

% low

24.1

8.6

63.5

67.9

64.6

67.0

51.5

<0.001

Material hardship

% yes

18.1

9.2

46.0

36.8

41.1

45.3

32.0

<0.001

Single motherhood

% yes

11.2

5.3

6.7

8.9

48.2

53.2

23.0

<0.001

Other parental characteristics

        

BMI mother

In kg/m2

23.7 (4.3)

23.1 (3.8)

25.2 (5.1)

25.3 (4.6)

23.8 (3.9)

24.6 (5.2)

23.5 (4.7)

<0.001

BMI father

In kg/m2

25.2 (3.5)

25.1 (3.3)

26.3 (4.0)

25.8 (3.8)

24.5 (3.1)

25.3 (3.9)

24.5 (3.6)

<0.001

Pregnancy smoking

% yes

11.0

10.4

16.0

8.0

11.2

12.2

10.3

0.01

Birth characteristics

        

Birth weight

In grams

3449 (550)

3500 (553)

3393 (492)

3518 (471)

3271 (531)

3221 (558)

3041 (516)

<0.001

Gestational age

In weeks

40.0 (1.7)

40.0 (1.7)

39.9 (1.6)

40.3 (1.5)

39.9 (1.4)

39.6 (1.8)

39.4 (1.5)

<0.001

Risk factors in infancy

        

Breastfeeding at 6 months

% yes

28.8

29.6

37.3

25.9

18.9

18.2

17.0

<0.001

Child overweight

Age 2

11.3

9.2

21.4

20.7

13.4

12.6

3.0

<0.001

 

Age 2.5

11.4

8.4

26.3

17.3

20.8

10.2

0.0

<0.001

 

Age 3

10.1

7.8

23.3

17.9

9.7

11.7

1.2

<0.001

 

Age 3.5

10.4

7.6

28.1

14.0

12.5

10.0

4.5

<0.001

 

Age 4

12.1

9.2

23.1

18.9

17.4

16.1

8.0

<0.001

  1. Values are percentages or mean (SD).
  2. aP-values are for Chi2 test for categorical variables, and ANOVA for continuous variables.
  3. Missing values were 103 (2.2%) for educational level, 940 (20.5%) for income, 988 (21.6%) for material hardship, 82 (1.8%) for single motherhood, 943 (20.6%) for BMI mother, 1229 (26.8%) for BMI father, 813 (17.7%) for smoking during pregnancy, 2 (0%) for birth weight, 719 (15.7%) for breastfeeding at 6 months.