Question

1. QUESTION 1In cross-sectional studies, both the exposure and disease outcome are determined simultaneously for each subject. True or Falses   

2. QUESTION A case-control study provides a snapshot of the population’s health at a given point in time. True or False

3. QUESTION 3 A cohort study is known as a prevalence study. True or  False

4. QUESTION 4 Observational studies suffer from a few limitations that inhibit their ability to identify causal relationships. They are easily influenced by bias and confounding  True or  False

5. QUESTION 5 A cohort study is considered a longitudinal study. True or False

6. QUESTION 6 A case-control study design is optimal for a rare disease. True or False

7. QUESTION 7 In a cross-sectional study, you can calculate the prevalence of exposure and the prevalence of disease.  True or False

8. QUESTION 8 Confounding is a type of systematic error in epidemiologic studies. True or False

9. QUESTION 9 Attributable risk answers the question of how much of the disease that occurs can be attributed to a certain exposure.  True or False

10. QUESTION 10 In an RCT, the population is randomly sampled.  True or False

11. QUESTION 11 In epidemiology, correlation=causation.  True or  False

12. A confounder is on the casual pathway between the exposure and disease.  True or False

13. QUESTION 12

    In a study begun in 2010, a group of 3000 adults in The Bronx were asked about sugar consumption. The occurrence of diabetes between 2010 and 2020 was studied in this group. This is an example of:

    		prospective cohort study
    		ecological study
    		case-control study
    		cross-sectional study
    		retrospective cohort study

QUESTION 20

1. A community assesses a random sample of its residents by telephone questionnaire in 2019. They find drinking alcohol is strongly associated with diagnosed liver disease. This study design is best described as which one of the following?

   		prospective cohort study
   		ecological study
   		case-control study
   		cross-sectional study
   		retrospective cohort study

Answer 1

1-true. Incross sectional study ecposure nad outcome are decided simultaneously

2-false. Case control study determine the association between exposure and outcome.

3-false. Cross sectional study is known as prevalance study.

4-true.cross sectional study is done at a time only so these errors are present.

5-true. It is along term study hence called longitudinal study.

6-false. We need much number of outcomes to decide the strength of association that is not possible in case of rare disease.

7-true. It can be done.

8-true. Confounding are the error that are attached with exposure d outcome both.

9-true. Attributable risk denotes number of outcome caused by risk factor or exposure.

10-true. It is done so.

11-false , correlation leads to increase chance of causation.

12- prospective cohort study.

Since people are exposed to risk fvtor in 2010 and outvome is analysed in 2010-2020.do its a prospective cohort sfudy.

20- cross sectional study. In cross sectional study , exposure and outcome are determined simultaneously.

Hope this helps. All the best ?