Table 2 Distribution of characteristics according to language scores ≤ and > the 15th percentile in 999 mother-child pairs from the Odense Child Cohort, Odense, Denmark

Educational level

Short

26

31

25

26

28

26

Intermediate

52

50

52

51

52

50

Long

22

19

23

23

20

24

BMI 3 (kg/m ² )

< 25 (under/normal)

64

59

65

61

57

63

25–30 (overweight)

26

30

25

27

34

25

> 30 (obese)

10

11

10

12

9

12

Fish diet

Never

12

12

13

12

20*

11*

0–3 times/week

82

85

81

82

75*

84*

4–7 times/week

6

3

6

6

6*

5*

Parity

1

57

55

57

57

57

56

2

34

33

35

34

33

35

2+

9

12

8

9

10

9

Age (years)

< 28

25

22

26

24

19*

25*

28–34

50

46

50

51

46*

53*

> 34

25

32

24

25

35*

22*

Sex

Boy

54

57

53

50

53

49

Girl

46

43

47

50

47

51

Preterm (GW < 37)

Yes

2

2

2

2

3

1

No

98

98

98

98

97

99

z-Birthweight

1st quartile

26

25

26

24

23

24

2nd -3rd quartile

47

45

48

49

51

48

4th quartile

27

30

26

27

26

28

Day care (DC)

Nursery/day care

73

75

72

74

76

73

Integrated inst.

27

25

28

26

24

27

Hours/week in DC

< 30 hours

17

15

17

15

14

15

30–35 hours

36

39

35

37

37

37

> 35 hours

47

46

48

48

49

48

Total breastfeeding

≤ 3 months

21

28*

20*

21

25

19

> 3 months

79

72*

80*

79

75

81

Fish diet at 18 months

Never/hardly ever

23

34*

22*

22

31

20

Weekly

47

41*

46*

48

39

48

Daily

30

25*

32*

30

30

31

Educational level

Short

26

31

25

26

28

26

Intermediate

52

50

52

51

52

50

Long

22

19

23

23

20

24

BMI 3 (kg/m ² )

< 25 (under/normal)

64

59

65

61

57

63

25–30 (overweight)

26

30

25

27

34

25

> 30 (obese)

10

11

10

12

9

12

Fish diet

Never

12

12

13

12

20*

11*

0–3 times/week

82

85

81

82

75*

84*

4–7 times/week

6

3

6

6

6*

5*