Question: 1. Stratification is a way to control for confounding at the analysis level of an observational epidemiological study. Can confounding also be controlled at the

1. Stratification is a way to control for confounding at the analysis level of an observational epidemiological study. Can confounding also be controlled at the design level of an observational epidemiological study? If so, name and describe a method for controlling confounding at the design level of an observational epidemiological study. 2. Define misclassification. Describe misclassification in case-control studies. Describe misclassification in cohort studies

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