Table 1

Background characteristics of the participants, means (SD) or numbers (%)

Intervention group

(n = 48)

Control group

(n = 37)

p-value


Age at 2 months postpartum (y)

29.5 (3.9)

28.3 (4.4)

0.21

Education level, n (%)

0.46

basic or secondary education

23 (48)

17 (46)

polytechnic education

8 (17)

10 (27)

University education

17 (35)

10 (27)

Smoking status1, n (%)

0.22

Non-smoker before and after pregnancy

30 (68)

20 (57)

Smoker before pregnancy and non-smoker after pregnancy

5 (11)

2 (6)

Smoker before and after pregnancy

9 (21)

13 (37)

Pre-pregnancy BMI (kg/m2)

22.7 (3.7)

22.1 (2.3)

0.36

Total gestational weight gain (kg)

16.2 (5.0)

15.3 (5.0)

0.41

Gestational weight gain, n (%)

0.78

Below recommendations37

9 (19)

9 (24)

Within recommendations

13 (28)

11 (30)

Exceeding recommendations

25 (53)

17 (46)

Body weight at 2 months postpartum (kg)

67.1 (11.1)

64.7 (7.8)

0.26

Weight retention at 2 months postpartum compared to pre-pregnancy weight (kg)

4.3 (4.0)

4.2 (3.9)

0.91

BMI at 2 months postpartum (kg/m2)

24.3 (3.8)

23.6 (2.5)

0.30

by BMI groups, n (%)

0.25

18.5–24.9 kg/m2

30 (63)

27 (73)

25.0–29.9 kg/m2

15 (31)

10 (27)

≥ 30.0 kg/m2

3 (6)

0 (0)

Waist circumference at 2 months postpartum (cm)

81.8 (9.0)

81.1 (6.7)

0.66


1 Smokers include both daily and occasional smokers. Smoking status was assessed for the periods of 0–6 months before pregnancy and 4–10 months postpartum

Kinnunen et al. Nutrition Journal 2007 6:21   doi:10.1186/1475-2891-6-21

Open Data