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Table 2 Evolution of the prevalence of overweight, general obesity, and abdominal obesity at 4, 6, and 9 years of age by sex and household affluence

From: Tracking and risk of abdominal and general obesity in children between 4 and 9 years of age. The Longitudinal Childhood Obesity Study (ELOIN)

 

BMI

Waist circumference

Overweighta

General obesityb

Abdominal obesityc

N

%

95% CI

PR

95% CI

N

%

95% CI

PR

95% CI

N

%

95% CI

PR

95% CI

TOTAL

 4 years

319

16.8

(15.2–18.5)

1.00

 

97

5.1

(4.2–6.2)

1.00

 

129

6.8

(5.7–8.0)

1.00

 

 6 years

326

17.1

(15.5–18.9)

1.02

(0.91–1.15)

173

9.1

(7.9–10.5)

1.78

(1.51–2.11)

160

8.4

(7.2–9.7)

1,24

(1.06–1.44)

 9 years

414

21.8

(20.0–23.7)

1.30

(1.16–1.46)

296

15.6

(14.0–17.3)

3.05

(2.55–3.60)

276

14.5

(13.0–16.2)

2.14

(1.82–2.51)

SEX

Boys

 4 years

162

17.2

(14.9–19.7)

1.00

 

52

5.5

(4.2–7.2)

1.00

 

56

5.9

(4.6–7.6)

1.00

 

 6 years

175

18.5

(16.2–21.1)

1.08

(0.91–1.28)

107

11.3

(9.5–13.5)

2.06

(1.63–2.60)

70

7.4

(5.9–9.3)

1.25

(0.97–1.62)

 9 years

202

21.5

(18.9–4.1)

1.25

(1.05–1.47)

182

19.3

(16.9–21.9)

3.50

(2.73–4.48)

136

14.4

(12.3–16.8)

2.43

(1.89–3.11)

Girls

 4 years

157

16.4

(14.2–18.9)

1.00

 

45

4.7

(3.5–6.2)

(ref)

 

73

7.6

(6.1–9.5)

1.00

 

 6 years

151

15.8

(13.6–18.2)

0.96

(0.82–1.13)

66

6.9

(5.4–8.7)

1.47

(1.16–1.86)

90

9.4

(7.7–11.4)

1.23

(1.03–1.46)

 9 years

212

22.1

(19.6–24.9)

1.35

(1.14–1.59)

114

11.9

(9.8–14.1)

2.53

(1.94–3.30)

140

14.6

(12.5–17.0)

1.92

(1.55–2.37)

HOUSEHOLD AFFLUENCE

Low

 4 years

51

16.5

(12.8–21.1)

1.00

 

27

8.7

(6.1–12.5)

1.00

 

36

11.6

(8.5–15.7)

1.00

 

 6 years

59

19.1

(15.1–23.9)

1.16

(0.86–1.55)

45

14.6

(11.0–19.0)

1.67

(1.22–2.27)

41

13.3

(10.0–17.5)

1.14

(0.86–1.50)

 9 years

63

20.4

(16.2–25.3)

1.23

(0.90–1.69)

76

24.6

(20.1–29.7)

2.81

(2.02–3.90)

65

21.0

(16.8–25.9)

1.80

(1.35–2.41)

Medium

 4 years

98

16.6

(13.8–19.9)

1.00

 

31

5.3

(3.7–7.4)

1.00

 

33

5.6

(4.0–7.8)

1.00

 

 6 years

92

15.6

(12.9–18.8)

0.94

(0.75–1.17)

57

9.7

(7.5–12.3)

1.84

(1.38–2.45)

53

9.0

(6.9–11.6)

1.62

(1.22–2.11)

 9 years

129

21.7

(18.7–25.4)

1.31

(1.05–1.62)

93

15.8

(13.0–19.0)

3.00

(2.20–4.01)

91

15.4

(12.7–18.6)

2.75

(2.01–3.78)

High

 4 years

170

16.9

(14.7–19.4)

1.00

 

39

3.9

(2.8–5.3)

1.00

 

60

6.0

(4.7–7.6)

1.00

 

 6 years

175

17.4

(15.2–19.9)

1.03

(0.88–1.20)

71

7.1

(5.6–8.8)

1.82

(1.38–2.39)

66

6.6

(5.2–8.3)

1.10

(0.86–1.40)

 9 years

223

22.2

(19.7–24.9)

1.31

(1.12–1.54)

127

12.6

(10.7–14.8)

3.26

(2.41–4.38)

120

11.9

(10.1–14.1)

2.00

(1.57–2.55)

  1. aOverweight: 1 SD < BMI ≤ 2 SD according to the WHO-2007 standardized tables13
  2. bObesity: BMI > 2 SD according to the WHO-2007 standardized tables13
  3. cAbdominal obesity: ≥ 90th percentile of waist circumference according to the consensus of the International Diabetes Foundation (IDF)21
  4. PR Prevalence ratio, 95% CI 95% confidence interval, SD Standard deviation
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