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. Author manuscript; available in PMC: 2020 Jun 11.
Published in final edited form as: Pediatr Neurol. 2018 Dec 20;96:30–36. doi: 10.1016/j.pediatrneurol.2018.12.002

TABLE 6.

Age of Seizure Onset Associated With Symptoms/Comorbidities Using Log-Rank Test*

Symptom Age of Seizure Onset for Those Reporting Symptom (Median ± Standard Error in Months) Age of Seizure Onset for Those Not Reporting Symptom (Median ± Standard Error in Months) P value
Headaches 12 ± 2.15 8 ± 1.44 0.29
Strokelike episode 7 ±0.82 10 ± 1.33 0.001
Symptomatic stroke 6 ± 0.66 9 ± 1.26 0.012
Hemiparesis 5 ± 0.48 15 ± 1.67 <0.001
Visual field deficit 6 ± 0.89 12 ± 2.70 <0.001
Intellectual disability 6 ± 0.45 12 ± 1.07 0.001
Learning disorder 6 ± 0.85 13 ± 2.68 <0.001
ADD/ADHD 9 ± 1.33 8 ± 1.07 0.96
Autism spectrum disorder 4 ± 2.12 10 ± 1.08 0.10
Behavioral disorder 9 ± 1.09 10 ± 1.29 0.33
Mood disorder 18 ± 9.16 9 ± 1.28 0.22
Strabismus 8 ± 1.15 9 ± 1.0 0.79
Amblyopia 8 ± 1.14 9 ± 1.13 0.56
Immune problem 9 ± 14.72 8 ± 0.96 0.99
Growth hormone problem 5 ± 1.73 8 ± 0.91 0.049
Puberty problem 36 ± 32.86 8 ± 0.90 0.90
Thyroid disorder 9 ± 4.47 8 ± 0.92 0.68
Glaucoma surgery 6 ± 0.69 10 ± 1.09 0.023
Brain surgery 4 ± 1.23 10 ± 1.27 0.003
*

Significance in the log-rank test represents significant differences in estimated age of seizure onset based on the presence of the various symptoms. Bold values indicates the significance of P < 0.01.