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Table 1 The risk of obesity risk traits 1 in 2181 infants

From: The risk of obesity by assessing infant growth against the UK-WHO charts compared to the UK90 reference: findings from the Born in Bradford birth cohort study

 

UK-WHO charts

UK90 reference charts

Relative Risk (95% Confidence Interval)

Overweight (%)

   

1 month

2.2

2.5

0.889 (0.605, 1.305)

2 months

1.7

2.8

0.607* (0.405, 0.909)

3 months

2.4

3.2

0.768 (0.540, 1.093)

4 months

3.3

3.4

0.959 (0.697, 1.321)

5 months

3.9

3.5

1.132 (0.836, 1.532)

6 months

4.9

3.4

1.427* (1.068, 1.905)

7 months

6.7

4.0

1.670* (1.291, 2.161)

8 months

9.0

4.9

1.849* (1.471, 2.324)

9 months

11.5

6.0

1.931* (1.576, 2.366)

10 months

14.2

7.3

1.938* (1.616, 2.323)

11 months

17.2

9.0

1.909* (1.623, 2.244)

12 months

21.0

10.9

1.929* (1.668, 2.229)

24 months (n = 751)

24.6

11.5

2.151* (1.701, 2.721)

Obesity (%)

   

1 month

0·3

0·4

0·750 (0·261, 2·158)

2 months

0·1

0·3

0·500 (0·125, 1·997)

3 months

0·2

0·2

1·000 (0·250, 3·993)

4 months

0·2

0·2

0·800 (0·215, 2·975)

5 months

0·5

0·3

1·429 (0·545, 3·746)

6 months

1·0

0·6

1·750 (0·863, 3·548)

7 months

1·2

0·8

1·500 (0·829, 2·715)

8 months

1·9

1·0

1·952* (1·158, 3·292)

9 months

2·8

1·5

1·875* (1·226, 2·868)

10 months

4·2

2·0

2·140* (1·497, 3·058)

11 months

6·0

2·7

2·241* (1·654, 3·037)

12 months

7·9

3·5

2·263* (1·739, 2·945)

24 months (n = 751)

9·2

4·4

2·091* (1·398, 3·126)

Weight gain, 0–12 months

   

Rapid (%)

50.0

38.9

1.257* (1.181, 1.337)

Extremely (%) rapid

27.5

20.7

1.214* (1.124, 1.311)

BMI gain, 1–12 months

   

Rapid (%)

55.2

36.5

1.470* (1.380, 1.567)

Extremely rapid (%)

32.6

19.8

1.440* (1.328, 1.561)

  1. *significant at p < 0.05.
  2. 1Overweight, BMI > 1.34 Z-scores = 91st centile; obesity, BMI > 2.05 Z-scores = 98th centile; rapid weight or BMI gain, gain > 0.67 Z-scores = one centile band; extremely rapid weight or BMI gain, gain > 1.34 Z-scores = two centile bands.