Skip to main content

Table 2 Weight gain during and after pregnancy by tertiles of estimated pregnancy weight gain. Means (and 95% confidence intervals) are shown.

From: Pregnancy weight gain and breast cancer risk

 

Pregnancy weight gain (kg)

 
 

<11 (n = 696)

11–15 (n = 697)

>15 (n = 696)

p-value

Mother's weight gain (kg)

    

   Total weight gain, weeks 0–40

8.6 (8.5–8.8)

12.9 (12.9–13.0)

18.2 (18.0–18.4)

<0.001

Weight after delivery 1

    

   Weight change from 40th week (kg)

-7.4 (-7.7 – -7.2)

-8.8 (-9.0 – -8.6)

-10.6 (-10.9 – -10.3)

<0.001

   Weight compared to pre- pregnancy weight (kg)

+1.3 (1.0–1.6)

+4.1 (3.8–4.3)

+7.6 (7.3–8.0)

<0.001

   BMI (kg/m2)

22.6 (22.4–22.9)

23.2 (22.9–23.4)

24.4 (21.1–24.6)

<0.001

Weight at the hospital visit 2

(n = 167)

(n = 170)

(n = 159)

 

   Change from pre-pregnancy weight (kg)

+ 6.4 (5.1–7.8)

+10.4 (9.0–11.9)

+12.5 (10.8–14.3)

<0.001

   BMI (kg/m2)

25.0 (24.3–25.6)

25.6 (25.0–26.2)

26.3 (25.6–27.0)

0.021

   Change from pre-pregnancy BMI (kg/m2)

+ 2.4 (1.9–3.0)

+ 4.0 (3.4–4.6)

+ 4.8 (4.1–5.4)

<0.001

  1. 1 on postpartum day 51, range 40–78, total n = 1,314–1,713
  2. 2 29 years after pregnancy in average, range 9–47