Cohort Studies in Epidemiology
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Questions and Answers

What is another name for a cohort study?

  • Randomized controlled trial
  • Case-control study
  • Cross-sectional study
  • Follow-up study (correct)

In a cohort study, the groups of persons to be studied are defined based on:

  • Characteristics manifest after the appearance of the disease
  • Exposure to common events like cyclones or earthquakes
  • Characteristics manifest prior to the appearance of the disease (correct)
  • The presence of common outcomes

When is a cohort study efficient for examination?

  • When follow-up is difficult and the cohort is unstable
  • When there are common outcomes and many different outcomes for the same exposure
  • When the exposure is rare and the incidence of disease is lower among the exposed
  • When there is good evidence of exposure and disease (correct)

What is the defining characteristic of a longitudinal study?

<p>It involves observing groups over a period of time (B)</p> Signup and view all the answers

What makes a cohort study suitable for examination when exposure is rare but the incidence of disease is higher among the exposed?

<p>The ease of follow-up and stability of the cohort (D)</p> Signup and view all the answers

What is the primary purpose of an experimental study design?

<p>To provide scientific proof of etiological factors (A)</p> Signup and view all the answers

Which of the following is a characteristic of a prospective cohort study?

<p>Follow-up for single event like mortality (D)</p> Signup and view all the answers

What distinguishes an intervention study from a cohort study?

<p>Intervention in one group and observation in another (B)</p> Signup and view all the answers

What type of data collection is typically used in a cohort study?

<p>Clinical examinations and lab tests (D)</p> Signup and view all the answers

In experimental studies, what role does the researcher play?

<p>Manipulator of situations (A)</p> Signup and view all the answers

Study Notes

Cohort Study

  • Another name for a cohort study is a longitudinal study or prospective study.

Defining Cohort Study

  • In a cohort study, the groups of persons to be studied are defined based on their exposure to a particular factor or risk.
  • A cohort study is efficient for examination when the exposure is rare but the incidence of disease is higher among the exposed.

Characteristics of Longitudinal Study

  • The defining characteristic of a longitudinal study is that it involves observing the same group of people over a period of time.

Suitability of Cohort Study

  • A cohort study is suitable for examination when exposure is rare but the incidence of disease is higher among the exposed.

Experimental Study Design

  • The primary purpose of an experimental study design is to establish cause-and-effect relationships between variables.

Prospective Cohort Study

  • A characteristic of a prospective cohort study is that it follows a group of people over time who do not have the outcome of interest at the start of the study.

Intervention Study vs Cohort Study

  • What distinguishes an intervention study from a cohort study is the active manipulation of the study factor by the researcher in an intervention study.

Data Collection in Cohort Study

  • The type of data collection typically used in a cohort study is prospective, where data is collected as the events occur.

Role of Researcher in Experimental Studies

  • In experimental studies, the researcher plays an active role by manipulating the study factor and controlling other factors that may influence the outcome.

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Description

Explore the concept and characteristics of cohort studies in epidemiology through this quiz. Learn about the observational nature, follow-up process, and various names associated with cohort studies.

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