Should the case definition for surveillance match the clinical case definition?
- A. True.
- B. FALSE
Correct Answer: B
Rationale: Surveillance and clinical case definitions may differ because they serve different purposes; clinical definitions focus on treatment, while surveillance definitions optimize detection.
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Qualitative data is not generated by
- A. Focus group discussion
- B. Observation
- C. Questionnaire
- D. Interviews
Correct Answer: C
Rationale: Qualitative data is generally not collected through structured questionnaires, which are more suited for quantitative data.
Net reproduction rate (NRR=1) implies a couple protection rate (CPR) of
- A. 50
- B. 60
- C. 70
- D. 80
Correct Answer: A
Rationale: An NRR of 1 indicates replacement-level fertility, which corresponds to a CPR of approximately 50% in most populations.
Binomial distribution is
- A. Discrete distribution
- B. Continuous distribution
- C. Individual distribution
- D. Poisson distribution
Correct Answer: A
Rationale: The binomial distribution models discrete outcomes, typically successes and failures.
Ergonomics is related to
- A. Economics
- B. Agriculture
- C. Engineering means to reduce occupational hazards
- D. Agricultural economics
Correct Answer: C
Rationale: Ergonomics involves engineering principles to design workspaces and tools that reduce occupational hazards.
Preservative of sewage is called-
- A. chloroform
- B. haloform
- C. formalin
- D. all
Correct Answer: C
Rationale: Formalin is commonly used as a preservative for sewage samples.