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DOI: 10.1177/000992280204100106 Factors Affecting the Yield of Pediatric EEGs in Clinical PracticeDepartment of Neurology, Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio
Department of Environmental Health, University of Cincinnati, Cincinnati, Ohio Clinical factors affecting the yield of 2500 pediatric electroencephalograms were analyzed. Electroencephalograms were interpreted as epileptiform in 40% of children with epilepsy. Most electroencephalograms were ordered for seizure in children not taking anti-epileptic drugs; just 15% showed epileptiform features. Six percent of electroencephalograms were epileptiform in non-seizure patients. The neurologist significantly influenced the odds of epileptiform interpretation (P- 0.022) and the recommendation to repeat the electroencephalogram (P< 0.001). In practice most electroencephalograms ordered for seizure are actually for non-seizure. In routine pediatric practice, electroencephalography has a low yield and appears to be over-used.
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