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Table 3 Primary Exposures and Outcomes by ASD Affected or Unaffected status (N = 770)

From: Prevalence of non-febrile seizures in children with idiopathic autism spectrum disorder and their unaffected siblings: a retrospective cohort study

Characteristic variable ASD (n = 610) # (%) Unaffected siblings (n = 160) # (%) F or χ2; p
Non-febrile seizures
 Yes 50 (8.2) 4 (2.5) χ2(1) = 6.25; 0.01
 No 134 (91.8) 156 (97.5)
Febrile seizures
 Yes 19 (3.1) 5 (3.1) χ2(1) = 0.0001; 0.99
 No 591 (96.9) 155 (96.9)
Type of non-febrile seizures
 Complex partial 9 (1.5) 1 (0.6) χ2a
 Generalized/ Grand mal 16 (2.6) 0 (0.0)
 Absence/petit mal 7 (1.1) 1 (0.6)
 Other 6 (1.0) 2 (1.3)
 Unknown 7 (1.1) 0 (0.0)
 Multiple 5 (0.8) 0 (0.0)
 None 560 (91.8) 156 (97.5)
GI dysfunctions
 Yes 251 (42.5) 20 (12.8) χ2(2) = 45.33; <0.0001
 No 340 (57.5) 136 (87.2)
Type of GI dysfunctions
 Gastroesophageal reflux 12 (2.0) 6 (3.8) χ2(6) = 57.37; <0.0001
 Irritable bowel syndrome 2 (0.3) 2 (1.3)
 Chronic diarrhea 66 (10.8) 3 (1.9)
 Constipation 86 (14.1) 3 (1.9)
 Other 33 (5.4) 3 (1.9)
 Multiple 52 (8.5) 3 (1.9)
 None 359 (58.9) 140 (87.5)
  1. aStatistics not available due to empty cells