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Overview of Analytical Studies: Cohort Studies

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Questions and Answers

What is the primary purpose of a cohort study?

To identify the natural history of a disease
To analyze associations between the rates of the outcomes and risk factors
To describe the incidence rates of an outcome over time (correct)
To compare the outcomes in different ecological settings

In a cohort study, what is the starting point for the study?

Natural history of disease
Incidence rate
Risk factor (correct)
Exposure to ecological factors

Which type of study design is considered the best observational one for establishing cause–effect relationships?

Case report
Survey
Ecological study
Cohort study (correct)

What distinguishes cohort studies from other types of studies?

Grouping people based on exposure to specific factors (B) Signup and view all the answers

What is the key feature of cohort studies in terms of follow-up?

Following up groups over time to determine disease incidence (B) Signup and view all the answers

Which of the following examples best represents a cohort study?

Life expectancy of cerebral palsy children (A) Signup and view all the answers

In a cohort study, what is a strength of using objective measures of exposure?

It helps in determining the incidence of disease in exposed and unexposed groups (C) Signup and view all the answers

What is a limitation of cohort studies when considering rare diseases?

They are not efficient for rare diseases (B) Signup and view all the answers

What does the relative risk of 1 indicate in relation to exposure and disease?

There is no association between exposure and disease (B) Signup and view all the answers

What does the term 'hazards' refer to in the context of measuring the association between risk factor and diseases?

The likelihood of injury (C) Signup and view all the answers

Why are objective measures of exposure preferred over subjective measures in cohort studies?

They help in determining the incidence of disease in exposed and unexposed groups (C) Signup and view all the answers

What is a potential issue when a cohort study goes over many years?

It may have considerable loss to follow up (A) Signup and view all the answers

What does the relative risk measure in a cohort study?

Risk in the exposed (A) Signup and view all the answers

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