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WorksheetsCohort Studies
Total questions: 10
Worksheet time: 6mins
The term Cohort is best represented by which picture ?
In a Cohort design, Bias in assessment of outcomes can be prevented by (a) the assessors.
All of the following statements are true about a retrospective cohort study EXCEPT
The base-line data may not be ideal
The data collection is retrospective
The study is less time-consuming than a prospective cohort study
The study moves from outcome to exposure
A relative risk of more than 1 implies
Protective effect
Increased risk associated with exposure
No association between exposure and outcome
An invalid result
Which one of the following is an advantage of a Prospective Cohort Study
Allows for calculation of prevalence of a condition
Is ideal for studying rare conditions
Is free of the effect of confounding
Eliminates recall bias
Which of the following statements is FALSE ?
Cohort study is a type of experimental study
Cohort studies flow in a logical direction
Cohort studies may be used to study multiple outcomes that might arise from a single exposure
Analytical studies have a control/comparison group
Which of the following studies allow for calculation of “incidence” of a condition?
Case –control studies
Cohort Studies
Cross-sectional studies
Descriptive studies
Which of the following correctly describes the temporal direction of the Cohort study design?
Outcome to Exposure
Exposure and outcome at the same time
The temporal sequence is immaterial
Exposure to outcome
What is the relative risk of getting lung cancer among smokers?
3
4.25
7.5
27
Which among the following is a disadvantage of a Cohort study
Patient drop-out
Cannot calculate incidence
Recall bias
Survivor Bias
