According to article Zurmehly article. What type of study design was utilized and what variables were...

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According to article Zurmehly article. What type of study designwas utilized and what variables were explained?

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This short article gives a brief guide to the different study types and a comparison of the advantages and disadvantages See also Levels of Evidence These study designs all have similar components as wed expect from the PICO A defined population P from which groups of subjects are studied Outcomes O that are measured And for experimental and analytic observational studies Interventions I or exposures E that are applied to different groups of subjects Overview of the design tree Figure 1 shows the tree of possible designs branching into subgroups of study designs by whether the studies are descriptive or analytic and by whether the analytic studies are experimental or observational The list is not completely exhaustive but covers most basics designs Our first distinction is whether the study is analytic or nonanalytic A nonanalytic or descriptive study does not try to quantify the relationship but tries to give us a picture of what is happening in a population eg the prevalence incidence or See Answer

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