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Table 2 Cumulative incidence of overweight/obesity among children with normal-weight by sex

From: Incidence of childhood overweight and obesity and its association with weight-related attitudes and behaviors in China: a national longitudinal study

 

All

Boys

Girls

% (95% CI)

P

% (95% CI)

P

% (95% CI)

P

 

3.03 (2.79, 3.27)

 

2.98 (2.64, 3.33)

 

3.08 (2.75, 3.41)

 

Age(years)

 

0.689

 

0.234

 

0.706

 6–11.9

3.09 (2.77, 3.41)

 

3.16 (2.69, 3.62)

 

3.02 (2.58, 3.46)

 

 12–17

2.96 (2.60, 3.32)

 

2.73 (2.22, 3.25)

 

3.15 (2.65, 3.64)

 

Ethnicity

 

0.644

 

0.558

 

0.937

 Han

2.94 (2.68, 3.19)

 

2.95 (2.58, 3.33)

 

2.92 (2.57, 3.27)

 

 Others

2.68 (1.69, 3.68)

 

2.49 (1.10, 3.88)

 

2.86 (1.43, 4.29)

 

Paternal education level

 

0.650

 

0.549

 

0.109

 Junior high school or below

3.04 (2.66, 3.42)

 

2.80 (2.27, 3.33)

 

3.26 (2.72, 3.81)

 

 Senior high school

2.77 (2.30, 3.25)

 

3.15 (2.39, 3.90)

 

2.46 (1.84, 3.07)

 

 Junior college

3.10 (2.37, 3.84)

 

2.77 (1.72, 3.82)

 

3.37 (2.34, 4.39)

 

 College or above

2.62 (1.92, 3.32)

 

3.26 (2.07, 4.44)

 

2.13 (1.29, 2.97)

 

Maternal education level

 

0.880

 

0.008

 

0.099

 Junior high school or below

2.86 (2.51, 3.21)

 

2.54 (2.05, 3.02)

 

3.16 (2.64, 3.67)

 

 Senior high school

3.09 (2.56, 3.62)

 

3.14 (2.34, 3.93)

 

3.06 (2.35, 3.77)

 

 Junior college

3.03 (2.28, 3.77)

 

3.31 (2.13, 4.50)

 

2.81 (1.87, 3.76)

 

 College or above

2.81 (2.04, 3.59)

 

4.20 (2.80, 5.60)

 

1.68 (0.86, 2.49)

 

Monthly family income

 

0.083

 

0.067

 

0.315

  < 2000 RMB

2.35 (1.60, 3.10)

 

1.85 (0.85, 2.85)

 

2.76 (1.67, 3.84)

 

 2000–5000 RMB

3.10 (2.58, 3.62)

 

3.58 (2.76, 4.39)

 

2.69 (2.03, 3.35)

 

 5000–12,000 RMB

3.46 (2.93, 4.00)

 

3.40 (2.62, 4.18)

 

3.52 (2.79, 4.25)

 

  ≥ 12,000 RMB

2.29 (1.53, 3.05)

 

2.17 (1.09, 3.26)

 

2.38 (1.32, 3.44)

 

 Refuse to answer

3.02 (2.65, 3.40)

 

2.80 (2.28, 3.32)

 

3.24 (2.69, 3.78)

 

Location

 

0.573

 

0.810

 

0.587

 Urban

3.08 (2.79, 3.38)

 

3.01 (2.58, 3.44)

 

3.14 (2.73, 3.55)

 

 Rural

2.94 (2.53, 3.34)

 

2.92 (2.34, 3.50)

 

2.95 (2.39, 3.51)

 

Region

 

< 0.001

 

< 0.001

 

0.244

 Liaoning

4.29 (3.54, 5.03)

 

4.98 (3.81, 6.15)

 

3.69 (2.75, 4.63)

 

 Tianjin

3.19 (2.54, 3.84)

 

2.70 (1.84, 3.56)

 

3.65 (2.69, 4.62)

 

 Shanghai

3.40 (2.74, 4.07)

 

3.88 (2.83, 4.92)

 

3.00 (2.15, 3.85)

 

 Ningxia

2.81 (2.08, 3.54)

 

2.46 (1.47, 3.46)

 

3.12 (2.07, 4.16)

 

 Chongqing

2.74 (2.19, 3.29)

 

2.23 (1.51, 2.95)

 

3.21 (2.39, 4.04)

 

 Hunan

2.20 (1.68, 2.73)

 

1.77 (1.10, 2.45)

 

2.61 (1.82, 3.39)

 

 Guangdong

2.63 (2.05, 3.21)

 

3.00 (2.08, 3.91)

 

2.32 (1.58, 3.06)

 

BMI z-score at baselinea (mean (95CI%))

 

< 0.001

 

< 0.001

 

< 0.001

  < 0

0.31 (0.20, 0.41)

 

0.23 (0.10, 0.37)

 

0.37 (0.22, 0.51)

 

  > 0.00~

0.57 (0.26, 0.87)

 

0.67 (0.17, 1.16)

 

0.48 (0.10, 0.86)

 

 0.25~

2.18 (1.55, 2.80)

 

1.81 (0.98, 2.63)

 

2.51 (1.59, 3.42)

 

 0.50~

6.47 (5.35, 7.60)

 

5.30 (3.83, 6.78)

 

7.56 (5.88, 9.24)

 

  ≥ 0.75

17.78 (16.18, 9.38)

 

15.16 (13.2, 17.12)

 

21.5 (18.83, 24.17)

 
  1. aBMI z-score was calculated based on the WHO standard
  2. Abbreviations: CI confidence interval, RMB Renminbi, BMI body mass index
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International Journal of Behavioral Nutrition and Physical Activity

ISSN: 1479-5868

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