Epidemiology: Case Control Study Analysis

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Questions and Answers

What is the primary objective of a cohort study in the context of pregnancy?

To determine the risk ratio of low birth weight in smokers versus non-smokers (correct)
To identify the causality of low birth weight in pregnant women
To evaluate the effectiveness of smoking cessation programs
To compare the incidence of disease in smokers and non-smokers

What is the key characteristic of a cohort study design?

Selecting cases and controls based on the outcome of interest
Analyzing existing data from a population
Starting with a population of interest and recruiting participants based on exposure (correct)
Assigning participants to treatment or control groups

How is the risk ratio calculated in a cohort study?

By multiplying the incidence rate of disease in exposed individuals by the incidence rate of disease in unexposed individuals
By subtracting the incidence rate of disease in unexposed individuals from the incidence rate of disease in exposed individuals
By adding the incidence rate of disease in exposed individuals to the incidence rate of disease in unexposed individuals
By dividing the incidence rate of disease in exposed individuals by the incidence rate of disease in unexposed individuals (correct)

What is the outcome of interest in the cohort study described in the text?

The incidence of low birth weight in smokers and non-smokers (A) Signup and view all the answers

What is the primary advantage of a cohort study design?

It allows for the identification of causality between exposure and outcome (C) Signup and view all the answers

What is the term for the group of pregnant women who are smokers in a cohort study?

Exposed group (A) Signup and view all the answers

What is the purpose of dividing the cohort into exposed and unexposed groups?

To determine the risk ratio of low birth weight in smokers versus non-smokers (A) Signup and view all the answers

What is the key difference between a cohort study and a case-control study?

A cohort study starts with a population and follows them to see if disease develops, while a case-control study starts with cases and controls and looks for exposure (A) Signup and view all the answers