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Table 3 Gestational weight gain according to BMI categories a

From: Secular trends of low birthweight and macrosomia and related maternal factors in Beijing, China: a longitudinal trend analysis

 

Inadequateb

Adequatec

Excessived

 

kg

n

%

kg

n

%

kg

n

%

BMI < 18.5 kg/m2

<12.70

235

13.6

12.70-18.14

762

44.3

>18.14

725

42.1

BMI 18.5-24.9 kg/m2

<11.34

768

11.4

11.34-15.88 g

2004

29.7

>15.88

3970

58.9

BMI 25–29.9 kg/m2

<6.80

50

7.1

6.80-11.34 g

156

22.1

>11.34

499

70.8

BMI ≥ 30 kg/m2

<4.99

4

3.3

4.99-9.07

24

19.5

>9.07

95

77.2

Total

 

1057

11.4

 

2946

31.7

 

5289

56.9

Linear trend analysis

       

P e

  

<0.001

  

<0.001

  

<0.001

  1. BMI, body mass index
  2. aData source: Beijing Obstetrics and Gynecology Hospital, 2010.
  3. bWeight gain less than recommended by the Institution of Medicine (IOM).
  4. cWeight gain in line with IOM recommendations.
  5. dWeight gain higher than recommended by IOM.
  6. eP values come from chi square for trend analysis.
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