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Table 1 Detailed characterisation of HR subgroups and LR controls

From: Developmental change in look durations predicts later effortful control in toddlers at familial risk for ASD

 

Low risk

High risk

  

Combined

HR-no ASD

HR-ASD

9 months

Nb (% boys)

23 (56.52%)

94c (57.45%)

75 (50.00%)

16 (88.50%)

 Age in months

9.15 (0.74)

9.01 (0.81)

9.05 (0.81)

8.80 (0.83)

8.15–11.05

7.96–11.54

7.96–11.54

8.02–10.39

 MSEL ELC

112.26 (13.79)

105.93 (15.68)

107.33 (15.14)

101.81 (17.25)

81–133

65–123

67–123

65–113

15 months

Nb (% boys)

19 (52.63%)

97c (53.61%)

80 (50.00%)

14 (85.71%)

 Age in months

15.69 (.90)

15.41 (0.99)

15.46 (0.99)

15.09 (1.00)

14.10–17.88

13.87–18.94

13.87–18.94

13.97–17.36

 MSEL ELC

103.84 (16.04)a

93.95 (14.80)

95.96 (14.66)a

84.00 (12.84)

92–144

49–142

49–142

49–119

3 years

Nd (% boys)

24 (58%)

108 (57%)

92 (51%)

16 (88%)

 Age in months

38.58 (1.38)

38.86 (2.25)

39.03 (2.16)

37.87 (2.56)

36–41

30–50

35–50

30–42

 MSEL ELC

120.21 (15.14)a

102.27 (24.97)

105.30 (23.22)a

84.81 (28.21)

69–141

49–145

49–145

49–142

 ADI-social

1.00 (1.50)a

3.52 (4.83)

2.02 (2.58)a

12.13 (5.76)

0–6

0–25

0–12

2–25

 ADI-communication

0.50 (1.06)a

3.96 (4.73)

2.65 (3.31)a

11.50 (4.69)

0–4

0–19

0–14

3–19

 ADI-RRB

0.08 (0.28)a

1.47 (2.42)

0.75 (1.51)a

5.63 (2.55)

0–1

0–10

0–9

0–10

 ADOS-Social CSS

2.58 (2.00)

2.75 (2.22)

2.51 (1.95)a

4.12 (3.12)

1–7

1–10

1–9

1–10

 ADOS-RRB CSS

3.58 (2.30)a

4.29 (2.60)

3.95 (2.59)a

6.25 (1.61)

1–7

1–9

1–9

5–9

SCQ

2.71 (2.31)a

6.36 (6.94)

4.71 (5.35)a

17.93 (6.82)

0–9

0–29

0–27

0–29

  1. MSEL ELC Mullen Scales for Early Learning Early Learning Composite, ADI Autism Diagnostic Interview, ADOS Autism Diagnostic Observation Schedule, CSS Calibrated Severity Score, SCQ Social Communication Questionnaire
  2. Standard deviations are given in parenthesis and minimum and maximum values in italics.
  3. aSignificant differences with the HR-ASD group at p < .05
  4. bSample size based on all participants that contributed look duration data at that visit, with complete measure data
  5. cIncludes three HR infants for whom infant data was collected but were not allocated outcome group status.
  6. dSample size based on all participants that contributed look duration data for at least one infant visit and clinical information at age 3