Table 2

Characteristics of the Early Markers for Autism study populationa

Characteristics

ASD (N = 84)

DD (N = 49)

GP (N = 159)

ASD vs. GP

ASD vs. DD

DD vs. GP


n

%

n

%

n

%

P value

P value

P value


Gender

0.91

0.0003

<0.0001

Male

73

86.9

29

59.2

139

87.4

Female

11

13.1

20

40.8

20

12.6

Plurality

0.42

1.0

0.34

Singleton

81

96.4

47

95.9

156

98.1

Multiple

3

3.6

2

4.1

3

1.9

Parity

0.05

0.24

Primiparous

42

50.0

16

32.7

67

42.1

0.24

Multiparous

42

50.0

33

67.3

92

57.9

Mother's race

0.06

0.63

0.62

Caucasian

57

67.9

37

75.5

126

79.2

Asian

19

22.6

9

18.4

28

17.6

Other

6

7.1

3

6.1

5

3.1

Missing

2

2.4

0

0

0

0

Mother's ethnicity

0.0007

0.0001

0.17

Hispanic

20

23.8

28

57.1

73

45.9

Non-Hispanic

64

76.2

21

42.9

86

54.1

Mother's birth country

<0.0001

<0.0001

0.33

United States

45

53.6

16

32.7

71

44.7

Mexico

9

10.7

22

44.9

58

36.5

Other

30

35.7

11

22.4

30

18.9

Mean maternal age, years (±SD)

30.9 (5.2)

28.3 (5.2)

28.2 (5.5)

0.0003

0.006

0.87

Mean paternal age, years (±SD)

34.0 (6.3)

33.0 (7.9)

31.0 (6.5)

0.001

0.41

0.14

Mean last recorded maternal weight prior to blood draw, lb (±SD)

145.1(26.7)

149.1(38.7)

146.9 (33.8)

0.65

0.53

0.56


aASD: autism spectrum disorder; DD: developmental delay; GP: general population.

Goines et al. Molecular Autism 2011 2:13   doi:10.1186/2040-2392-2-13

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