Quiz 28th July 2023

Which of the following statements is incorrect?

•  A good research question should be Feasible, Interesting, Novel, Ethical and Relevant

• A good research question should be in epidemiological terms

• A good research question facilitates to choose optimal design

• A good research question will focus on one issue

Characteristics of a good hypothesis are all, EXCEPT

• There should be no ambiguity about the study variables

• It should be stated ‘a priori’

•  It can be revised based on the study findings

• It should specify one exposure and one outcome

Which of the following study design is better suited to demonstrate a temporal association between exposure and disease?

•  Cross-sectional study

•  Case-control study

•  Cohort study

• Ecological study

Which of the following is NOT true regarding case-control study?

 i. Appropriate for study of rare  outcome

 ii. More time consuming than cohort study

 iii. Multiple exposures can be examined

 iv. Relatively expensive compared to cohort study

•  Both (i) and (ii)

•  Both (ii) and (iii)

•  Both (ii) and (iv)

• Both (iii) and (iv)

Using medical records from a tertiary care cancer hospital, a researcher collected data on occupational exposure and lung carcinoma on patients admitted between 2000 and 2010. He classified the patients who had history of working in coal mines as exposed and others as unexposed. He then compared the frequency of lung carcinoma among the exposed and the unexposed. What best describes the study design?

• Case control study

• Retrospective cohort study

• Cross-sectional study

• Analytical cross-sectional study

Probability that a person out of those who tested positive on a screening test has in fact, the disease is known as?

• Sensitivity

• Specificity

• Positive predictive value

• Negative predictive value

If your objective is to estimate the prevalence of a health problem in a community in 2022, Identify the type of research question this study is addressing

• Analytical research question

• Descriptive research question

• Hypothetical research question

• Experimental research question

Which of the following is incorrect in case of a clinical trial?

• All clinical trials must be blinded

• Randomization is a critically important step in a clinical trial

• All clinical trials must be approved by Institutional Ethics Committee before initiation

• It is mandatory to register clinical trials with Clinical Trials Registry of India