Gce Model Questions Vol1 2021 Agricultural Science Question 30

Practice objective / multiple choice question 30 from the 2021 Gce Model Questions Vol1 Agricultural Science examination.

Gce Model Questions Vol1 2021 Agricultural Science Objective / Multiple Choice Medium Difficulty
Question 30 GCE_MODEL_QUESTIONS_VOL1 • 2021 • AGRICULTURAL_SCIENCE • objective

A field study compares two farms. Farm A vaccinates its cattle against foot‑and‑mouth disease and records 4 cases among 200 cattle in one year. Farm B does not vaccinate and records 18 cases among 150 cattle. Calculate the incidence proportion for each farm, the relative risk of disease in unvaccinated versus vaccinated cattle, and interpret the result.

Answer Options

A. Incidence A = 2 %; Incidence B = 15 %; Relative risk = 7.5 (unvaccinated cattle have seven‑point‑five‑fold higher risk).
Correct Answer B. Incidence A = 2 %; Incidence B = 12 %; Relative risk = 6 (unvaccinated cattle have six‑fold higher risk).
C. Incidence A = 2 %; Incidence B = 12 %; Relative risk = 5 (unvaccinated cattle have five‑fold higher risk).
D. Incidence A = 4 %; Incidence B = 12 %; Relative risk = 3 (unvaccinated cattle have three‑fold higher risk).
Correct Answer
B
Correct Option:
Incidence A = 2 %; Incidence B = 12 %; Relative risk = 6 (unvaccinated cattle have six‑fold higher risk).

About This Question

This is Gce Model Questions Vol1 2021 Agricultural Science Question 30. It is one of the objective questions from the 2021 Gce Model Questions Vol1 Agricultural Science examination.

Difficulty level: Medium .

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