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What is the main difference between prospective and retrospective cohort studies?
What is the main difference between prospective and retrospective cohort studies?
- Prospective studies only focus on historical data, while retrospective studies only focus on future outcomes.
- Prospective studies follow a cohort into the future for a health outcome, while retrospective studies trace the cohort back in time for exposure information after the outcome has occurred. (correct)
- Prospective studies are conducted after the outcome has occurred, while retrospective studies are conducted before the outcome has occurred.
- Prospective studies trace the cohort back in time for exposure information after the outcome has occurred, while retrospective studies follow a cohort into the future for a health outcome.
How are cohorts typically established in a cohort study?
How are cohorts typically established in a cohort study?
- The selection of cohorts is solely based on gender and socioeconomic status.
- The investigator controls the selection of the cohort based on common characteristics like age, location, or exposure to certain working environments. (correct)
- The cohort is randomly selected from the general population without any specific criteria.
- Cohorts are established based on self-selection by individuals interested in participating in the study.
What is another term for both prospective and retrospective cohort studies?
What is another term for both prospective and retrospective cohort studies?
- Cross-sectional studies
- Case-control studies
- Experimental studies
- Longitudinal or follow-up studies (correct)
In a cohort study, how may cohorts be selected based on exposures known at baseline?
In a cohort study, how may cohorts be selected based on exposures known at baseline?
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What is the purpose of following a cohort over time in a cohort study?
What is the purpose of following a cohort over time in a cohort study?
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In a cohort study, what is the main difference between prospective and retrospective cohorts?
In a cohort study, what is the main difference between prospective and retrospective cohorts?
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How are cohorts typically established in a cohort study?
How are cohorts typically established in a cohort study?
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What is another term for both prospective and retrospective cohort studies?
What is another term for both prospective and retrospective cohort studies?
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What is the purpose of following a cohort over time in a cohort study?
What is the purpose of following a cohort over time in a cohort study?
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In a cohort study, how may cohorts be selected based on exposures known at baseline?
In a cohort study, how may cohorts be selected based on exposures known at baseline?
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