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B.Sc. in Applied Statistics: Measuring Association in Health Sciences

17 Questions

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B.Sc. in Applied Statistics: Measuring Association in Health Sciences

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Questions and Answers

Which indicator is used to compare the risk of suffering a given disease when a given exposure is present or absent?

Correlation Coefficient

Standard Error

Odds Ratio (correct)

Hazard Ratio

What can be used to assess the association between having been exposed to a given condition and suffering a given disease?

Mode

Mean Absolute Deviation

Relative Risk (correct)

Sample Variance

What does Population Attributable Risk measure?

The proportion of disease cases in the population that could be attributed to the exposure (correct)

The mean of the population data

The variance of the population data

The risk of disease in a specific population

Under what conditions are Relative Risk, Odds Ratio, and Attributable Risk estimable?

In both experimental and observational studies Signup and view all the answers

Which measure is used to compare risks under different study designs?

Prevalence Ratio Signup and view all the answers

What is the proper measure to compare the risk of a disease between two exposure groups in cohort studies?

Risk ratio Signup and view all the answers

What is the main purpose of Attributable Fractions?

To estimate the proportion of disease cases due to exposure Signup and view all the answers

What is the interpretation of RR = 1.50 in a cohort study?

The disease risk is 50% higher in the exposed group Signup and view all the answers

What is used to estimate P(D|E) in case-control studies?

Odds ratio Signup and view all the answers

Which transformation of probability is used to compare the prevalence of exposure in case-control studies?

Odds Signup and view all the answers

What measure of association is used in cross-sectional studies to compare the prevalence of disease between two exposure groups?

Prevalence ratio Signup and view all the answers

What does an OR = 1.71 indicate in a case-control study?

The odds of having the disease among exposed are 71% higher than among non-exposed Signup and view all the answers

When comparing two groups, why could using ratios lead to different results than using differences?

Ratios and differences work in different metrics Signup and view all the answers

What can happen if PR1 > PR2 while PD1 < PD2 in a given study?

It suggests inconsistency between different measures Signup and view all the answers

Why are ratios more widely used than differences in studies?

Ratios are more interpretable than differences Signup and view all the answers

Which measure of association is used to compare cumulative incidence in cohort studies?

Risk difference Signup and view all the answers

What does an OR = 1 indicate in a case-control study?

There is no association between exposure and disease Signup and view all the answers