Disease Prevention Multiple Choice Questions

Disease Prevention Multiple Choice Questions Related

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A follow-up study was conducted of 3,000 military troops deployed at an atomic test site in Nevada to detect the occurrence of leukemia. A total of 1,870 persons were successfully traced by the investigators, and an additional 443 contacted the investigators on their own as a result of publicity about the study. Four cases of leukemia occurred among the 1,870 individuals traced by the investigators, and an additional four occurred among those individuals who contacted the investigators on their own. Could interpretation of the study results be subject to bias?

  • A. Yes, due to differential participation rates between the traced group and self-referrals.
  • B. No, because the number of leukemia cases is evenly distributed.
  • C. Yes, but only if the traced group had higher radiation exposure.
  • D. No, because the study design accounts for all possible biases.
Correct Answer: A

Rationale: Differential participation can lead to selection bias, especially if the characteristics of those who self-refer differ systematically from those traced by investigators.

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clustrom protein coagulates due to:

  • A. albumin
  • B. globulin
  • C. fibrinogen
  • D. prothrombin
Correct Answer: C

Rationale: Fibrinogen is essential for blood clotting and coagulation processes.

The best measure of association to use for these data is a/an:

  • A. Food-specific attack rate
  • B. Odds ratio
  • C. Rate ratio
  • D. Risk ratio
Correct Answer: B

Rationale: Odds ratios are appropriate for case-control studies.

Demographic gap means

  • A. Differences in sex ratio
  • B. Differences between age-specific birth and death rates
  • C. Differences between birth and death rates
  • D. Differences in child and women ratio
Correct Answer: C

Rationale: Demographic gap refers to the difference between birth and death rates in a population, indicating population growth or decline.

The mean BP of a group of persons was determined and after an intervention trial the mean BP was estimated again the test to be applied to determine the significance of intervention is:

  • A. Chi square test
  • B. Paired test
  • C. Correlation coefficient
  • D. Z test
Correct Answer: B

Rationale: Paired tests evaluate changes within the same group before and after an intervention.

An abstract of the journal article doesn't contain

  • A. Methodologies
  • B. Result
  • C. Objectives
  • D. Ethical consideration
Correct Answer: D

Rationale: Abstracts typically summarize the key points of an article, including objectives, methods, results, and conclusions, but do not delve into ethical considerations.

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