在5个城市作整群分层随机抽样调查确定与事故倾性有关指标的正常值范围。
The normal value range of indicators about accident proneness were detected according to epidemiological survey results using stratified random cluster sampling in 5 cities.
目的探讨意外伤害多发儿童的神经生化特征，为筛选事故倾性儿童提供依据。
Object To research neurobiochemical characteristics of accident-prone children so as to provide related bases for screening accident-prone children.
目的：探讨意外伤害及事故倾性的家族聚集性，为将来阐明遗传因素在其中的作用提供初步线索。
Objective:To explore familial aggregation in unintentional injury and accident-proneness, and search clues for elucidating genetic effects.
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