[Preparation of data for based on various research--application of statistical methods].
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D000818:Animals; D015982:Bias; D015986:Confounding Factors, Epidemiologic; D006801:Humans; D011446:Prospective Studies; D011897:Random Allocation; D016032:Randomized Controlled Trials as Topic; D012107:Research Design; D012189:Retrospective Studies; D013223:Statistics as Topic / Q000379:methods*