“case-crossover design”的概念、定义、翻译、参考文献-科学参考

单词	case-crossover design
释义	case-crossover design Encyclopedia 医学病例交叉研究释 case-crossover design病例交叉研究比较研究对象在急性事件发生前一段时间的暴露情况与未发生该急性事件的某段时间的暴露情况的方法。如果暴露与该事件（或疾病）有关，则在事件发生前一段时间内的暴露频率应该高于更早时间内的暴露频率。
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