Table 3 Estimated marginal means (controlling for covariates)

From: A systematic review and meta-analysis of 271 PCDH19-variant individuals identifies psychiatric comorbidities, and association of seizure onset and disease severity

Age at seizure onset

Mean ID severity

Standard error

≤12 months (“early”)

2.2

0.1

>12 months (“late”)

0.9

0.2

  1. NB: scale: (0) “normal”, (1) “borderline”, (2) “mild ID”, (3) “moderate ID”, or (4) “severe/profound ID”