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Question 1
A case-control study of pancreatic cancer and coffee drinking finds an odds ratio of 2.5 for heavy coffee drinkers. Investigators later realise that smokers both drink more coffee and have higher pancreatic cancer risk. What term best describes the distortion smoking introduces into the coffee-cancer association?
Correct Answer:
Confounding
Question 2
A new screening test for a disease with 1% prevalence has sensitivity 90% and specificity 90%. Of 1,000 people screened, approximately how many of those who test positive will actually have the disease (positive predictive value)?
Correct Answer:
About 8%
Question 3
In a cohort study, the incidence of myocardial infarction is 30 per 1,000 person-years in the exposed group and 10 per 1,000 person-years in the unexposed group. What is the relative risk?
Correct Answer:
3.0
Question 4
A trial reports that a statin reduces the absolute risk of a cardiovascular event over 5 years from 10% to 6%. What is the number needed to treat (NNT) to prevent one event over 5 years?
Correct Answer:
25
Question 5
A randomised controlled trial of a smoking-cessation drug reports a hazard ratio for quitting of 1.8 with a 95% confidence interval of 0.95 to 3.4. How should this result be interpreted at the conventional 5% significance level?
Correct Answer:
The result is not statistically significant because the confidence interval includes 1
Question 1
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About this Exam

Prepare with the MFPH Part A (DFPH) Practice Questions - MFPH Part A Diplomate Examination (DFPH) Exam practice quiz. This question bank includes 100 questions covering health, disease, risk, reports, and public. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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MFPH Part A (DFPH) Practice Questions - MFPH Part A Diplomate Examination (DFPH) Exam

This practice set contains 100 questions from the matching question bank and focuses on health, disease, risk, reports, and public. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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