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Table 2 Early life risk factors overall and by ethnic group (White British and Pakistani), % or mean (SD)

From: The relationship between early life modifiable risk factors for childhood obesity, ethnicity and body mass index at age 3 years: findings from the Born in Bradford birth cohort study

Risk factor

Alla(N = 987)

White British (N = 382)

Pakistani (N = 474)

Pb

Pregnancy risk factors

Smoked during pregnancy (%)

N = 986

N = 382

N = 474

<0.001

  No

85.2

72.3

96.0

 

  Yes

14.8

27.7

4.0

 

Gestational diabetes (%)

N = 967

N = 376

N = 461

0.001

  No

89.7

92.8

85.9

 

  Yes

10.3

7.2

14.1

 

Maternal booking BMI category (%)

N = 949

N = 366

N = 458

0.003

  Underweight/normal

51.2

45.1

55.2

 

  Overweight

30.1

30.9

29

 

  Obese

18.7

24.0

15.7

 

Postnatal risk factors

Duration of any breastfeeding (%)

N = 987

N = 382

N = 474

<0.001

  Never

27.0

36.1

23.4

 

  1 day to 1 month

26.3

29.6

26.2

 

  1 to 4 months

18.5

13.9

21.7

 

  4+ months

28.2

20.4

28.7

 

Weaned <17 weeks (%)

N = 924

N = 363

N = 440

<0.001

  No

73.8

63.6

81.4

 

  Yes

26.2

36.4

18.6

 

Daily protein intake, mean (SD)

N = 866

N = 330

N = 417

0.001

  g per day

38.0 (17.2)

40.9 (17.6)

36.5 (17.0)

 

Daily total energy intake, mean (SD)

N = 866

N = 330

N = 417

0.003

  Kcal per day

1105 (433)

1169 (445)

1075 (412)

 

Caregivers feeding style (%)

N = 904

N = 343

N = 443

<0.001

  Authoritative

14.7

15.2

14.4

 

  Authoritarian

32.4

21.3

39.3

 

  Indulgent

34.8

48.1

26.0

 

  Uninvolved

18.0

15.5

20.3

 

Parental self-efficacy (%)

N = 899

N = 341

N = 440

0.49

  High

80.0

80.6

78.6

 

  Lower scores (bottom quintile)

20.0

19.4

21.4

 

Parental warmth (%)

N = 897

N = 341

N = 439

0.001

  High

73.4

79.8

69.5

 

  Lower scores (bottom quintile)

26.6

20.2

30.5

 

Hostile parenting (%)

N = 896

N = 341

N = 439

0.42

  Low

76.8

75.7

78.1

 

  Higher scores (top quintile)

23.2

24.3

21.9

 

Infant TV viewing time (%)

N = 901

N = 340

N = 443

<0.001

  None

7.2

6.5

8.1

 

  0-1 hour

37.6

44.1

34.1

 

  1-2 hours

27.0

29.4

23.7

 

  2-3 hours

28.2

20.0

34.1

 

Maternal TV viewing time (%)

N = 904

N = 343

N = 443

<0.001

  0-2 hours

43.1

33.5

49.4

 

  2-4 hours

41.9

50.4

36.6

 

   > 4 hours

14.9

16.0

14.0

 

Infant sleep duration (%)

N = 898

N = 337

N = 443

0.23

   < 11 hours

19.3

17.2

19.0

 

  11-12 hours

27.6

30.6

25.5

 

  12-13 hours

30.2

32.3

30.7

 

  13+ hours

22.9

19.9

24.8

 

Maternal activity level (%)

N = 902

N = 345

N = 439

<0.001

  Sedentary

15.9

9.0

20.7

 

  Insufficiently active

44.2

33.9

53.1

 

  Sufficiently active

39.9

57.1

26.2

 
  1. aThis includes 382 White British participants, 474 Pakistani participants and 131 participants of “Other” ethnicities.
  2. bDifference between White British and Pakistani (chi squared test or t-test as appropriate).