4 2 points A novice researcher wants examine risk factors for pancreatic cancer among young adults because it is a rare but highly deadly disease in that population. When the researcher tells their more experienced colleague about the study idea, their colleague advises that a cross-sectional would be best for that research question because that design can be done relatively quickly and generate hypotheses for future research studies. The colleague's advice is:
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Step 1: The colleague's advice is that a cross-sectional study would be best for the research question. Show more…
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The most appropriate study design depends, among other things, on the distribution of The risk factor in the population of interest The participants The outcome in the population of interest The risk factor in the population of interest and The outcome in the population of interest
Sri K.
9. Which study design is best (i.e. most efficient and logical) for each scenario? a. Identifying risk factors for a rare disease b. Identifying the long-term effects of a rare exposure c. Identifying the causes of a disease with a long latency period d. Evaluating the effects of a new medication
Suman K.
Section 1B: Choose only ONE option: 11. Which one of the following statements is NOT a strength of a cohort study? a. Good information on exposures (prospective) b. In retrospective study information on exposures and other key variables c. Can evaluate multiple effects of an exposure d. Efficient for rare exposures 12. Selection bias is most likely to occur in: a. Case-control studies b. Retrospective cohort studies c. Experimental studies d. Both retrospective cohort and case-control studies 13. Methods to control confounding in design stage include: a. Randomization b. Restriction c. Standardization d. Matching 14. Key facts about bias include the following EXCEPT: a. Usually result from a "prejudiced" investigator b. Can pull an association either toward or away from the null c. Amount of bias can be small, moderate, or large d. Is avoided when the study is carefully designed and conducted 15. When using general population as the comparison group, which of the following statement represents its weakness? a. preexisting available data on disease occurrence b. The general population is used as a comparison group when it is not possible to find a comparable internal comparison. c. The results are influenced by a form of bias known as the healthy worker effect. d. General population comparison groups are commonly used in occupational studies of mortality. 16. Situations in which case-control study is desirable, EXCEPT: a. Exposure data are difficult or expensive to obtain. b. The disease is rare. c. The disease has a short induction and latent period. d. Little is known about the disease. e. The underlying population is dynamic.
Thuc N.
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