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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

VariablesP valueDelayStagnationRegression
ADp=0.04729/ 48
60.4%
10/ 30
33.3%
16/ 27
59.3%
PDDNOSp=0.09319/ 48
39.6%
18/ 30
60.0%
9/ 27
33,3%
Non-idiopathicp=0.50719/ 48
39.6%
15/ 30
50.0%
14/ 27
51.9%
Epilepsy before 3 yrsp=0.6055/ 48
10.4%
2/ 30
6.7%
4/ 27
14.8%
IQ/DQ
 Normal/borderlinep=0.0376/ 48
12.5%
10/ 30
33.3%
3/ 27
11.1%
 Mild/moderatep=0.37825/ 48
52.1%
16/ 30
53.3%
10/ 27
37.0%
 Severe/profoundp=0.01617/ 48
35.4%
4/ 30
13.3%
13/ 27
48.1%
Categories Early signs
 Languagep=0.04646/ 48
95.8%
29/ 30
96.7%
22/ 27
81,5%
 Social interaction/relationshipp=0.62845/ 48
93.8%
27/ 30
90.0%
26/ 27
96.3%
 Stereotyped behavior and activitiesp=0.96638/ 48
79.2%
23/ 30
76.7%
21/ 27
77.8%
 Motor skill disordersp=0.006879135/ 48
72.9%
15/ 30
50.0%
10/ 27
37.0%
 Regulation
  Sleepp=0.83015/ 48
31.3%
9/ 30
30.0%
10/ 27
37.0%
  Feedingp=0.03124/ 48
50.0%
16/ 30
53.3%
6/ 27
22.2%
Age at onset (months)
 0-6p=0.005458015/ 48
31.3%
8/ 30
26.7%
/
 7-12p=0.29224/ 48
50.0%
10/ 30
33.3%
10/ 27
37.0%
 13-24p=0.0579/ 48
18.8%
8/ 30
26.7%
12/ 27
44.4%
 25-36p=0.040/4/ 30
13.3%
3/ 27
11.1%
 37 -51p=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