Cohort Study

Cohort study is:

• Needs few patients

• Incidence can be calculated

• Proceeds from effect to cause

• Odd ratio can be calculated

Incidence rate is measured by:

• (a) Case control study

• (c) Cross-sectional study

• (b) Cohort study

• (d) Cross-over study

Cross-sectional study otherwise known as

• Incidence study

• Retrospective study

• Prevalence study

• None of the above

Cohort study does NOT include:

• (a) Expensive

• (b) Study for chronic disease

• (c) Incidence rate calculated

• (d) Starts with the disease

A measure of risk in a cohort study is

• Relative risk

• Prevalence of odds ratio

• Exposure odds ratio

• None of teh above

Which of the following types of bias is NOT likely in a cohort study?

• Recall bias

• Loss to follow up bias

• Confounding

• None of the above

In which of the following situations should we avoid the cohort design?

• In study of a suspected risk factor of a disease

• In study of prognostic factors

• In study of a rare disease

• In a study where the likely period of follow up in short

Temporal association of disease is best established by :

• (a) Case control study

• (b) Cross sectional study

• (c) Cohort

  study

• (d)None of the above

Confounding can be eliminated by all EXCEPT:

• (a) Matching

• (b) Blinding

• (c) Randomization

• (d) Multivariate analysis

Relative risk is:

• No of persons diseased among Non-exposed/

  Incidence among exposed

• Incidence of Non exposed/Incidence among exposed

  × 100

• Incidence among exposed/Incidence among Nonexposed

  × 100

• Incidence among exposed/Incidence among Nonexposed