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Mathematics, 17.04.2020 18:58 vlactawhalm29

An article titled "Guard Your Kids Against Allergies, Get Them a Pet" (San Luis Obispo Tribune, August 28, 2002) described a study that led researchers to conclude that "babies raised with two or more animals were about half as likely to have allergies by the time they turned six." What is a potential factor that could confound the relationship cited?

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