有研究者提示,要注意“sicker user effect”。就是說有人身體不好了,就開始吃維他命了,會傾斜統計結果。
有研究者提示,要注意“sicker user effect”。就是說有人身體不好了,就開始吃維他命了,會傾斜統計結果。
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