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Table 2 PDD type, presence of epilepsy before 3 years of age, ID and IQ levels, the 4 categories of early signs, the age at onset

From: Early features of autism spectrum disorder: a cross-sectional study

Variables

P value

Delay

Stagnation

Regression

AD

p=0.047

29/ 48

60.4%

10/ 30

33.3%

16/ 27

59.3%

PDDNOS

p=0.093

19/ 48

39.6%

18/ 30

60.0%

9/ 27

33,3%

Non-idiopathic

p=0.507

19/ 48

39.6%

15/ 30

50.0%

14/ 27

51.9%

Epilepsy before 3 yrs

p=0.605

5/ 48

10.4%

2/ 30

6.7%

4/ 27

14.8%

IQ/DQ

 Normal/borderline

p=0.037

6/ 48

12.5%

10/ 30

33.3%

3/ 27

11.1%

 Mild/moderate

p=0.378

25/ 48

52.1%

16/ 30

53.3%

10/ 27

37.0%

 Severe/profound

p=0.016

17/ 48

35.4%

4/ 30

13.3%

13/ 27

48.1%

Categories Early signs

 Language

p=0.046

46/ 48

95.8%

29/ 30

96.7%

22/ 27

81,5%

 Social interaction/relationship

p=0.628

45/ 48

93.8%

27/ 30

90.0%

26/ 27

96.3%

 Stereotyped behavior and activities

p=0.966

38/ 48

79.2%

23/ 30

76.7%

21/ 27

77.8%

 Motor skill disorders

p=0.0068791

35/ 48

72.9%

15/ 30

50.0%

10/ 27

37.0%

 Regulation

  Sleep

p=0.830

15/ 48

31.3%

9/ 30

30.0%

10/ 27

37.0%

  Feeding

p=0.031

24/ 48

50.0%

16/ 30

53.3%

6/ 27

22.2%

Age at onset (months)

 0-6

p=0.0054580

15/ 48

31.3%

8/ 30

26.7%

/

 7-12

p=0.292

24/ 48

50.0%

10/ 30

33.3%

10/ 27

37.0%

 13-24

p=0.057

9/ 48

18.8%

8/ 30

26.7%

12/ 27

44.4%

 25-36

p=0.040

/

4/ 30

13.3%

3/ 27

11.1%

 37 -51

p=0.053

/

/

2/ 27

7.4%

  1. Abbreviations: PDD pervasive developmental disorder, ID intellectual disability, IQ intelligence quotient, AD autistic disorder, PDDNOS pervasive developmental disorder not otherwise specified, DQ development quotient