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For the first six issues below, cite which study is best to use (case-control or cohort study). For the last 3 types of bias, cite which study is less likely to have that particular type of bias (case-control or cohort) Answer 26 1) Study a rare discase 2) Study a rare exposure 3) Study multiple exposures 4) Study multiple outcomes 5) Study progression of the illness 6) Calculate disease rates 7) Recall bias 8) Loss to follow-up 9) Selection bias Question 27: Which type of study (cohort or case-control) would you have done first? Why? What would your second study be and why? Qucstion 28: Which of the following eriteria for causality are met by the evidence presented 4 07曰 MacBook Air
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For the first six issues below, cite which study is best to use (case-control or cohort study). For the last 3 types of bias, cite which study is less likely to have that particular type of bias (case-control or cohort) Answer 26 ) Study a rare disease -> case-control 2) Study a rare exposure --> Cohort 3) Study multiple exposures -> case-control (multiple exposures with single outcome) 4) Study multiple outcomes -> Cohort 5) Study progression of the illness --> Cohort 6) Calculate disease rates -.> Cohort 7) Recall bias --> Less in cohort 8) Loss to follow-up Less in case-control 9 Selection bias Less case-control Cohort study is an observational prospective study, which is very useful to determine the cause of the disease. In this a group of people called as cohort shares the common characteristics or exposure where Descriptive epidemiology is defined as, in a specific population the study of the distribution and determinants of the diseases or health related states or events, and application of this knowledge to control the disease or the health problems. Descriptive epidemiology is used to study the occurrence of the disease and distribution of the disease. It mainly depends on the pre-existing data. Case-control study is an observational retrospective study in which two groups are compared on the basis of exposure to the cause of disease attributes, at the end of the study, the results are compared with the initial status. The two groups in the study include people that are exposed to certain conditions or diseased and the group include the people that are not exposed to the condition.

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