| http://www.w3.org/ns/prov#value | - For analyses of clinical covariates, age was a continuous variable, OHS at presentation was dichotomized into 0 to 1 vs 2 to 5, and mode of presentation was dichotomized into seizure(s) vs other (although if following presentation a clinical event occurred that led to intervention, this subsequent event became the mode of presentation in the intervention group).
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