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Consider the following study A recent Brazilian study enrolled patients who had had symptoms of...

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Consider the following study A recent Brazilian study enrolled patients who had had symptoms of Covid 19 for a week but were not hospitalized The study randomly assigned them to receive the drug ivermectin once daily for three days or a placebo The medical staff and patients were unaware of the randomized assignments Overall 100 patients 14 7 in the ivermectin group were later hospitalized due to Covid 19 compared with 111 16 3 in the placebo group a negligible difference not statistically significant This study is an example of O a longitudinal cohort study a completely randomized experiment O an experiment with matched pairs repeated measures a census population data an unscientific study with voluntary sample or anecdotal data a case control observational study a cross sectional sample survey What is the response variable and is it quantitative or categorical Enter your answer here

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