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What is a cross sectional study What is a case control study Which is the superior observational study Why look back in time or require the researcher to look at existing records What is a case control study Choose the correct answer below O A Case control studies are observational studies that collect information about individuals at a specific point in time or over a very short period of time B Case control studies are observational studies that are retrospective meaning that they require individuals to look back in time or require the researcher to look at existing records OC Case control studies first identify a group of individuals to participate in the study These individuals are then observed over a period of time Over this period of time characteristics about the individual are recorded O D Case control studies are a list of all individuals in a population along with certain characteristics of each individual Which is the superior observational study Why Choose the correct answer below O A Case control studies are always the superior observational study because they are relatively inexpensive to conduct and can be done relatively quickly OB Cross sectional studies are always the superior observational study because they are cheap and quick to do OC Neither study is always the superior to the other Both have advantages and disadvantages that depend on the situation

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