Question: Select the techniques used to control for confounding in the early stages of planning and implementing duea collection or research study. Conducting Iterature reviews to
Select the techniques used to control for confounding in the early stages of planning and implementing duea collection or research study.
Conducting Iterature reviews to idensify confounding variables from other studies.
Deeiding es eallet dita on these frown confounding waribles.
Restrikting duta colection to limited groups of the confounders
Randomiling wibjects to interverson groups in an experimental toilal
A R and D
Al of the above
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