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

Table 4 Logistic Regression Models with Variables Associated with Reported Non-Febrile Seizures (N = 770)

Variable	Model 1 OR (95% CI)	Model 2 OR (95% CI)	Model 3 OR (95% CI)	Model 4 OR (95% CI)	Model 5^b OR (95% CI)
ASD Status
Affected	3.48 (1.23–9.87)^a	4.00 (1.46–11.00)^a	4.63 (1.62–13.22)^a	4.79 (1.47–15.63)^a	5.27 (1.51–18.35)^a
Unaffected	Reference	------	------	------	5.27 (1.51–18.35)^a
Gender(fem.)	-------	1.49 (0.82–2.74)	1.59 (0.86–2.93)	1.50 (0.79–2.84)	1.51 (0.78–2.91)
Age (yr.) at AGRE asses.	-------	------	1.12 (1.04–1.22)	1.11 (1.02–1.20)	1.12 (1.03–1.21)
GI dysf.	-------	-------	-------	1.91 (1.05–3.48)	1.87 (1.03–3.41)
History of febr. seizures	-------	-------	-------	-------	5.34 (1.86–15.37)

^aStatistics represent change in the point estimate with addition of each variable into the model (one at a time) starting with gender
^bFinal model

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