The following table shows data from an epidemiological study. What type of study was this most likely to be? Number of episodes Person-years (py) at risk Exposure Present 700 1950... The following table shows data from an epidemiological study. What type of study was this most likely to be? Number of episodes Person-years (py) at risk Exposure Present 700 1950 Absent 300 2250 Total 1000 4200 A. Case-control B. Cohort C. Randomised controlled trial D. Cross-sectional E. Descriptive
Understand the Problem
The question is asking which type of epidemiological study design is best represented by the provided data on exposure and outcomes related to person-years at risk. We need to analyze the characteristics of each study type to identify the most suitable answer.
Answer
Cohort study
The final answer is Cohort study.
Answer for screen readers
The final answer is Cohort study.
More Information
In a cohort study, researchers follow a group of people (a cohort) over time to see how different exposures affect the incidence of a particular outcome. The table showing 'Number of episodes' and 'Person-years (py) at risk' supports this as it indicates longitudinal data collection.
Tips
A common mistake would be to confuse cohort studies with case-control studies, as both involve studying the relationship between exposure and outcome. However, cohort studies provide a temporal sequence from exposure to outcome.
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