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Table 1 Descriptive information and correlations with Quantitative Checklist for Autism in Toddlers (Q-CHAT) scores

From: Foetal testosterone and autistic traits in 18 to 24-month-old children

 

Combined group

Girls

Boys

Sex difference effect size (d)

Variable

n

Mean

SD

Range

r

n

Mean

SD

Range

r

n

Mean

SD

Range

r

FT levela, nmol/Lc

129

0.59

0.41

0.05 to 2.28

0.40**

63

0.34

0.27

0.05 to 1.12

0.31*

66

0.82

0.42

0.15 to 2.28

0.36*

1.36

FE levela, pmol/L

129

307.12

186.29

108 to 1260

0.01

63

309.67

181.98

126 to 1260

0.06

66

304.70

191.68

108 to 1220

-0.01

0.03

Gestational age

120

16.92

1.83

13 to 26

-0.13

60

17.01

1.62

15 to 22.3

0.06

60

16.83

2.03

13 to 26

-0.25

0.10

Child age

129

19.25

1.52

18 to 24

-0.15

63

19.40

1.50

18 to 23

0.08

66

19.11

1.53

18 to 24

-0.19

0.19

Maternal age

129

35.67

4.21

21 to 46

0.06

63

35.81

4.26

24 to 46

-0.01

66

35.53

4.18

21 to 45

0.14

0.07

Parental education

127

3.56

1.05

1 to 5

-0.02

61

3.58

1.05

1 to 5

0.12

66

3.54

1.06

1 to 5

-0.13

0.04

Q-CHAT Scoreb

129

26.55

7.08

10 to 43

-

63

24.94

6.52

10 to 43

-

66

28.09

7.30

14 to 43

-

0.46

  1. aIndicates raw values.
  2. bSex difference is significant at the P < 0.05 level.
  3. cSex difference is significant at the P < 0.01 level.
  4. r = correlation value between each variable and Q-CHAT scores.
  5. * P < 0.05 level
  6. ** P < 0.01 level