方法：对84 0例先天性智力低下患者进行生化检查、家系分析和细胞遗传学分析。

Methods:We have analysed 840 cases of congenital mental retardation with biochemistry lab tests, cytogenetic study and family investigation.

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群“智力残疾”，一个全面概括先天性智商低下的术语，在男孩中常见比例多达30% ~ 50%，癫痫症也是。

"Intellectual disability", a catch-all term for congenital low IQ, is 30-50% more common in boys, as is epilepsy.

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结果治疗组平均发育商明显高于对照组（P<0.01），最终诊断以脑性瘫痪、良性先天性肌张力低下、智力低下为主。

The diagnosis were adjusted periodically. ResultsThe neurological development quotient of intervention group was significantly higher than that of the control(P<0.01).

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