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Table 2 Cohort characteristics

From: Identification of subgroups of children in the Australian Autism Biobank using latent class analysis

Developmental, dimensional and diagnostic interview (3di) Scores of Core Autism Traits

(Mean, SD)

Difficulties with social-emotional reciprocity (range 0–2)

1.0 (0.3)

Difficulties with non-verbal social communication (range 0–2)

0.9 (0.3)

Difficulties with developing and maintaining relationships (range 0–2)

1.0 (0.3)

Stereotyped and repetitive speech (range 0–45)

15.8 (10.5)

Stereotyped movements (range 0–9)

3.0 (2.3)

Stereotyped use of objects (range 0–9)

3.8 (2.5)

Adherence to routines (range 0–15)

6.1 (4.0)

Ritualised patterns of behaviour (range 0–15)

6.2 (4.0)

Resistance to change (range 0–12)

4.4 (3.4)

Restricted and fixated interests (range 0–27)

11.0 (6.0)

Sensory interests (range 0–15)

5.0 (3.5)

Hyposensitivity to sensory input (range 0–9)

2.5 (2.3)

Auditory hypersensitivity (range 0–4)

2.2 (1.6)

Other sensory hypersensitivity (range 0–24)

8.9 (5.9)

Other characteristics

(Mean, SD)

 Overall intellectual ability (percentile)

25.1 (29.0)

 Head circumference (z score)

− 0.5 (1.2)

 3di inattentiveness score (Range 0–9)

2.9 (2.3)

 3di hyperactivity and impulsivity score (range 0–9)

3.2 (2.4)

 3di child communication checklist fluency of speech score

28.8 (5.2)

 Vineland adaptive behaviour scale-II adaptive composite score (percentile)

15.4 (22.6)

 

n

%

 History of language delay

462

61.3%

 History of gross motor delay

242

32.1%

 History of regression

259

34.4%

 Co-occurring anxiety disorder

168

22.3%

 History of depression and/or suicidality

73

9.7%

 History of tics

98

13.0%

 History of hallucinations

62

8.2%

 Co-occurring oppositional defiant or conduct disorder

90

11.9%

 History of self-injurious behaviour

64

8.5%

 History of seizure(s)

77

10.2%

 Sleep onset difficulties

179

23.7%

 Sleep maintenance difficulties

104

13.8%

 History of gastrointestinal dysfunction

309

41.0%

Birthweight

  Low

66

10.5%

  Normal

481

76.3%

  Macrosomic

83

13.2%

  Food allergy (Acute reaction)

72

9.5%

  Food allergy (Non-acute reaction)

150

19.9%

  Non-food allergy

179

23.7%

  Hyperextensibility

83

11.0%