Table 2 SETIL study: frequency distribution of participating subjects by condition, gender, child’s age, year of diagnosis, lag between diagnosis and interview (months), parental education level, maternal age at child’s birth

Gender

Girls

482

46.2

313

45.8

19

19.6

63

40.6

Boys

562

53.8

370

54.2

78

80.4

92

59.4

Total

1044

100.0

683

100.0

97

100.0

155

100.0

Age

[0; 2)

156

14.9

95

13.9

5

5.2

88

56.8

[2; 4)

351

33.6

243

35.6

10

10.3

33

21.3

[4; 6)

233

22.3

146

21.4

14

14.4

25

16.1

[6; 11)

304

29.1

199

29.1

68

70.1

9

5.8

Year of diagnosis

1998

109

10.4

67

9.8

7

7.2

20

12.9

1999

314

30.1

212

31.0

32

33.0

35

22.6

2000

342

32.8

229

33.5

32

33.0

57

36.8

2001

279

26.7

175

25.6

26

26.8

43

27.7

Lag diagnosis - interview (months)

[0; 6)

30

2.9

29

4.2

5

5.2

5

3.2

[6; 12)

170

16.3

192

28.1

21

21.6

30

19.4

[12; 18)

373

35.7

297

43.5

28

28.9

51

32.9

[18 and over]

471

45.1

165

24.2

43

44.3

69

44.5

Maternal education

Primary

400

38.3

320

46.9

43

44.3

66

42.6

High school

503

48.2

285

41.7

44

45.4

75

48.4

University d.

139

13.3

78

11.4

10

10.3

14

9.0

Missing data

0

0.0

0

0.0

0

0.0

0

0.0

Paternal education

Primary

463

44.3

340

49.8

47

48.5

81

52.3

High school

424

40.6

268

39.2

39

40.2

57

36.8

University d.

151

14.5

70

10.2

11

11.3

16

10.3

Missing data

6

0.6

5

0.7

0

0.0

1

0.6

Maternal age at child’s birth

Mean (SD)

29.66

(4.76)

29.84

(4.91)

29.84

(4.86)

30.10

(4.75)

Paternal age at child’s birth

Mean (SD)

33.95

(5.40)

33.13

(5.61)

32.66

(5.27)

33.79

(5.52)