题目内容

从某市食物中毒中抽查儿童的死亡记录卡片发现,家庭经济条件差的死亡儿童数是家庭经济条件好的死亡儿童数的4倍,说明食物中毒家庭经济条件差的儿童危害大。该结论()

A. 正确
B. 不正确,因为无可比性
C. 不正确,因未作统计学显著性检验
D. 不正确,因为不是用率进行比较
E. 不正确,因为结果可能有偏差

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