Which denominator is used when calculating the infant mortality rate?
Correct answer: B. Total live births
- A. Total population
- B. Total live births
- C. Total pregnancies
- D. Total infant deaths
Explanation
Infant mortality rate uses the number of deaths among infants younger than one year divided by the number of live births in the same period. Total population is used for some general mortality measures, not this specific rate.
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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.
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