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Table 1 Descriptive statistics split by sex and risk group for the 14-month early markers (AOSI, gaze following, disengagement) and 3-year autistic trait measures (ADOS, SCQ)

From: Sex differences in the association between infant markers and later autistic traits

 

AOSI

GF

Disengagement

ADOS

SCQ

14 months

14 months

14 months

3 years

3 years

M (SD)

M (SD)

M (SD)

M (SD)

M (SD)

Low risk

 Overall

3.17 (3.25)

0.31 (0.14)

138.15 (105.81)

5.52 (4.33)

3.00 (2.40)

N = 48

N = 37

N = 46

N = 48

N = 48

 Males

3.59 (3.02)

0.27 (0.08)

148.34 (104.77)

6.41 (5.36)

2.88 (2.12)

N = 17

N = 10

N = 16

N = 17

N = 17

 Females

2.94 (3.40)

0.32 (0.16)

132.71 (107.73)

5.03 (3.65)

3.06 (2.57)

N = 31

N = 27

N = 30

N = 31

N = 31

High risk

 Overall

4.64 (4.47)

0.26 (0.10)

179.55 (152.91)

8.25 (5.34)

6.37 (7.12)

N = 53

N = 32

N = 52

N = 53

N = 52

 Males

5.19 (5.72)

0.25 (0.12)

196.91 (203.30)

9.24 (5.42)

6.00 (5.33)

N = 21

N = 13

N = 21

N = 21

N = 21

 Females

4.28 (3.48)

0.26 (0.08)

167.78 (108.81)

7.59 (5.26)

6.61 (8.20)

N = 32

N = 19

N = 31

N = 32

N = 31

ANOVA

 Risk group

F = 3.26

F = 1.86

F = 2.36

F = 7.19**

F = 8.75**

 Sex

F = 0.92

F = 1.11

F = 0.77

F = 2.26

F = 0.12

 Risk*sex

F = 0.03

F = 0.35

F = 0.05

F = 0.02

F = 0.04

  1. AOSI Autism Observation Scale for Infants, GF gaze following, disengagement overlap–baseline saccadic reaction time in gap-overlap task, ADOS Autism Diagnostic Observation Schedule total social communication score, SCQ Social Communication Questionnaire
  2. **p < 0.01