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Table 1 Basic characteristics of the study population

From: Co-occurring hydrocephalus in autism spectrum disorder: a Danish population-based cohort study

 

N

Median age in years, Dec 2016b (interquartile range)

Male (%)

Median age at diagnosis in years (interquartile range)

No psychiatric disease (controls)

28,606

22.6 (16.9–28.6)

50.4

Not relevant

Schizophrenia

5242

28.6 (25.3–32.2)

53.3

21.2 (18.9–24.0)

Major depressive disorder

22,868

28.8 (25.0–32.2)

31.9

20.0 (17.0–23.3)

Bipolar disorder

2300

29.7 (26.5–32.8)

35.6

22.9 (20.0–26.5)

Autism spectrum disorder

14,564

19.8 (16.2–23.9)

80.9

9.6 (6.4–13.3)

 Childhood autism

4447

17.9 (14.6–21.6)

81.4

7.3 (4.8–12)

 Atypical autism

1803

19.7 (16.2–23.6)

75.8

10.8 (7.1–14.4)

 Asperger’s syndrome

4405

21.7 (17.7–25.9)

83.6

11.5 (8.6–14.9)

 Other PDDa

1868

20.7 (16.9–24.5)

80.9

10.5 (7.6–13.5)

 Unspecified PDD

2131

19.7 (15.9–24.5)

78.5

9.5 (6.6–13.2)

Attention-deficit hyperactivity disorder

12,901

21.2 (16.8–25.7)

75.2

11.4 (8.4–17.0)

  1. aPervasive developmental disorder.
  2. bEnd of follow-up