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Table 1 Sample characteristics (N = 205)

From: Factors associated with age of diagnosis of autism spectrum disorder among children in Saudi Arabia: new insights from a cross-sectional study

Variable

N (%)

Median age at diagnosis in years (range)

Overall

 

3.0 (1.25—6.75)

Child

 Sex

  Male

170 (83)

3.0 (1.25—6.75)

  Female

35 (17)

2.8 (1.25—6.00)

Age

 3–5 years

53 (26)

2.3 (1.25—4.75)

 6–9 years

109 (53)

3.0 (1.25—5.50)

 10–13 years

23 (11)

3.0 (1.25—6.75)

 14–18 years

20 (10)

3.3 (1.75—6.00)

Autism red flags

 Language deficit

  Yes

120 (59)

2.9 (1.25—6.75)

  No

 

3.0 (1.25—5.25)

Lack of eye contact

 Yes

100 (49)

2.8 (1.25—6.75)

 No

 

3.0 (1.25—5.25)

Does not respond to name when called

 Yes

115 (56)

2.8 (1.25—6.00)

 No

 

3.0 (1.25—6.75)

Does not smile

 Yes

45 (22)

3.0 (1.25—5.50)

 No

 

3.0 (1.25—6.75)

Lack of looking back and forth to share interests

 Yes

89 (43)

2.7 (1.25—6.75)

 No

 

3.0 (1.25—6.00)

Does not babble

 Yes

25 (12)

3.0 (1.25—5.50)

 No

 

3.0 (1.25—6.75)

Odd play

 Yes

70 (34)

3.0 (1.25—6.75)

 No

 

2.8 (1.25—6.75)

Engaging in challenging behaviors

 Yes

48 (23)

3.0 (1.75—6.75)

 No

 

2.8 (1.25—5.25)

Severity of symptoms

 13–26

21 (10)

2.3 (1.25—4.00)

 27–39

133 (65)

3.0 (1.25—6.75)

 40–52

51 (25)

3.0 (1.75—6.00)

Comorbidity

 ADHD

109 (54)

3.0 (1.25—6.00)

 Intellectual disability

16 (8)

3.5 (2.00—6.75)

 Epilepsy

3 (1)

2.3 (2.00—3.50)

 Cerebral palsy

3 (1)

3.5 (3.00—4.50)

 None

74 (36)

2.5 (1.25—5.25)

City of diagnosis

 Major cities

146 (71)

3.0 (1.25—6.75)

 Other cities

41 (20)

2.8 (1.25—5.25)

 Outside Saudi Arabia

18 (9)

2.5 (1.50—5.00)

City of diagnosis

 In city of residence

127 (62)

3.0 (1.25—6.75)

 Outside city of residence

78 (38)

3.0 (1.25—6.00)

Family

 Saudi citizen

  Yes

184 (90)

2.9 (1.25—6.75)

  No

21 (10)

3.0 (1.50—5.25)

Maternal educational attainment

 Less than high school

26 (13)

3.0 (1.25—5.50)

 High school degree

47 (23)

3.0 (1.25—6.75)

 Some college credits

24 (12)

3.0 (1.25—5.25)

 College degree

94 (46)

2.8 (1.25—6.00)

 Graduate degree or higher

14 (7)

2.5 (1.75—4.25)

Maternal age

 ≤ 24 years

12 (6)

2.6 (1.50–6.75)

 25–34 years

100 (49)

3.0 (1.25—5.00)

 35–44 years

75 (37)

2.8 (1.25—5.50)

 45–54 years

18 (9)

3.0 (1.75—5.50)

Paternal educational attainment

 Less than high school

24 (12)

3.0 (1.25—5.00)

 High school degree

50 (24)

3.0 (1.25—6.75)

 Some college credits

34 (17)

3.0 (1.25—5.50)

 College degree

70 (34)

3.0 (1.25—6.00)

 Graduate degree or higher

27 (13)

2.4 (1.75—5.25)

Paternal age

 25–34 years

47 (23)

2.8 (1.25—5.00)

 35–44 years

96 (47)

3.0 (1.25—6.75)

 45–54 years

45 (22)

2.8 (1.25—6.00)

 55–64 years

9 (4)

4.0 (2.00—5.50)

 ≥ 65 years

7 (3)

3.3 (2.00—5.25)

Annual household income

 Below sufficiency line

81 (40)

3.0 (1.25—5.00)

 From sufficiency line to 100% above

81 (40)

3.0 (1.25—6.75)

 > 100% above

43 (20)

2.8 (1.25—6.00)

Residence

 Major cities

106 (52)

3.0 (1.25—6.75)

 Other cities

94 (46)

3.0 (1.25—6.00)

 Outside Saudi Arabia

5 (2)

1.5 (1.25—2.75)