A study reports a relative risk of 1.8 for hepatitis infection among people with a particular exposure, with a 95% confidence interval of 1.2 to 2.7. What is the best interpretation?
Correct answer: A. The exposure is associated with higher risk
- A. The exposure is associated with higher risk
- B. The exposure prevents hepatitis infection
- C. The result proves the exposure causes infection
- D. The exposure has exactly 1.8 times the risk in every person
Explanation
The relative risk above 1 indicates higher risk in the exposed group, and the interval does not include 1, supporting a statistically significant association. This result alone does not prove causation or mean that every individual has the same risk.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Epidemiology and Biostatistics
Epidemiology examines the distribution and causes of disease by person, place and time, using measures such as incidence, prevalence, mortality and case-fatality rates. Biostatistics covers data presentation, sampling, averages, variability, probability and interpretation of study results, while distinguishing association from causation.
Practise Epidemiology and Biostatistics
50 free Epidemiology and Biostatistics MCQs from Community Health Nursing, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Community Health Nursing questions like this
Community Health Nursing is on 9 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Epidemiology and Biostatistics questions
A study reports a p-value of 0.02 for the difference in recovery time between two treatments. Assuming the significance level is 0.05, which interpretation is correct?
For a maternal health survey, a researcher divides women into urban and rural groups, then randomly selects participants from each group. Which sampling method is used?
A researcher in a rural health centre writes the names of all eligible households on slips, mixes them, and draws 30 slips. Which sampling method is being used?
A cross-sectional survey finds that adults with poor housing are more likely to have tuberculosis. What is the main limitation when interpreting this finding?
A community health team compares diarrhoeal disease rates among children, adults and older people. Which epidemiological variable is being examined?
Researchers identify patients with newly diagnosed hepatitis C and a group without hepatitis C, then compare their previous injection practices. Which study design is this?