Richardson S A, Koller H, Katz M, McLaren J
Am J Ment Defic. 1981 Mar;85(5):457-66.
A functional classification of seizure impairment was described and its distribution examined in a population classified as mentally retarded in childhood and followed to age 22. Twenty-five percent of the sample had some history of seizures up to age 22. Seizure histories were found for 19 percent of these retarded persons in the preschool years and 13 percent in each period of early, late, and postschool years. A drop in minor seizure impairment occurred after age 5. A slightly higher frequency of seizure histories among males was found, largely due to subjects whose IQs were 50 to 59, where 44 percent of the males and 5 percent of the females had seizure histories. No significant association was found between degree of seizure impairment and severity of mental retardation.
描述了癫痫发作损伤的功能分类，并在一组童年时被归类为智力迟钝且随访至22岁的人群中研究了其分布情况。25%的样本在22岁之前有癫痫发作史。在这些智力迟钝者中，19%在学龄前有癫痫发作史，在小学早期、晚期和毕业后各阶段均为13%。5岁后轻度癫痫发作损伤有所下降。发现男性癫痫发作史的频率略高，主要是因为智商在50至59之间的受试者，其中44%的男性和5%的女性有癫痫发作史。未发现癫痫发作损伤程度与智力迟钝严重程度之间存在显著关联。
