Cohort Study

Cohort Study is a ....

• Experimental Study

• Observational Study

• Analytical Observational Study

Below is the role of cohort study except...

• To determine the incident rate of new cases

• To determine the temporal relationship between factor and outcome

• To track back exposure that relates to an outcome

• To measure the impact of exposure towards an outcome

In a retrospective cohort study, selected participant must be ensured to be free from the desired outcome at the _______ .

• baseline level

• follow up period

• outcome level

• an stage of study period

What is incident case in Cohort Study?

• An individual within the cohort who experiences the health outcome or event of interest for the first time during the study period.

• An individual within the cohort who already has the health outcome or event of interest at the beginning of the study.

• A participant in the cohort study who does not experience the health outcome or event being studied, serving as a comparison group.

• A participant in the cohort study who has been exposed to a particular risk factor being investigated.

What is the formula to calculate incidence rate?

• total number of new case/total number of population at risk

• total number of population at risk/total number of new case

• total number of new case/total number of old case

• total number of case/total number of case with exposure

Select the correct statement regarding Cohort Study.

• In Cohort Study, we already know the outcome but not the exposure.

• In Cohort Study we already know the exposure but not the outcome.

• In Cohort Study, both outcome and exposure is unknown.

Calculate the relative risk based on the following information:

Incidence rate among exposed group : 0.85

Incidence rate among unexposed group : 0.15

• 5.6

• 0.17

• 0.12

• 1

Choose the right interpretation if your RR value is 3.

• The exposed group has 3 times risk to develop the outcome compared to the unexposed group.

• The unexposed group has 3 times risk to develop the outcome compared to the exposed group.

• The exposure does not provide a significant risk towards the development of the outcome among the exposed group.

• The exposure provide a significant risk towards the development of the outcome among the unexposed group.