Table 1 Baseline Characteristics for the total cohort at birth (n ≥ 14 244) and baseline data at birth for the cohort still participating at the five-year follow up (n ≥ 5 999) compared to the data for that group (≥ 5 999) at this follow-up.

Boys/girls, %

48.2/51.8

48.1/51.9

48.1/51.9

Overweight/obese, boys %

-

-

11.3/3.6

Overweight/obese, girls %

-

-

14.6/4.8

BMI mother, mean (sd)

23.8 (3.9)*

23.7 (3.9)*

24.1 (4.0)

BMI father, mean (sd)

25.0 (3.0)*

25.0 (2.9)*

25.6 (3.1)

Maternal age, mean (sd)

29.6 (4.6)

29.9 (4.5)

Paternal age, mean (sd)

32.1 (5.5)

32.3 (5.4)

University degree, mother %

31.7

34.5

39.4

University degree, father %

24.6

25.3

26.6

Smoking, mother %

11.1

7.8

10.7

Smoking, father %

-

-

9.3

Single parent %

2.1

1.2

6.6

Fathers born abroad %

7.2

5.2

Mothers born abroad %

6.6

5.3

Exclusive breastfeeding, median†

4.0

4.0