Waec Model Questions Vol1 2023 Biology Question 39

Practice objective / multiple choice question 39 from the 2023 Waec Model Questions Vol1 Biology examination.

Waec Model Questions Vol1 2023 Biology Objective / Multiple Choice Hard Difficulty
Question 39 WAEC_MODEL_QUESTIONS_VOL1 • 2023 • BIOLOGY • objective

A case‑control study reports the following data on disease X: - Smokers: 2000 individuals, 150 develop disease X. - Non‑smokers: 3000 individuals, 90 develop disease X. Calculate (a) the relative risk (RR) of disease X for smokers, (b) the attributable risk percent among the exposed, and (c) the population attributable risk percent assuming the given population distribution. Based on these figures, which preventive measure would most effectively reduce the overall burden of disease X?

Answer Options

A. Relative risk = 2.0; Attributable risk percent among exposed = 50 %; Population attributable risk percent = 30 %; Implement smoking‑cessation programmes to reduce exposure.
B. Relative risk = 2.5; Attributable risk percent among exposed = 55 %; Population attributable risk percent = 35 %; Implement public‑health education campaigns on smoking risks.
Correct Answer C. Relative risk = 2.5; Attributable risk percent among exposed = 60 %; Population attributable risk percent = 37.5 %; Implement smoking‑cessation programmes to reduce exposure.
D. Relative risk = 3.0; Attributable risk percent among exposed = 66 %; Population attributable risk percent = 45 %; Implement taxation on tobacco products to reduce consumption.
Correct Answer
C
Correct Option:
Relative risk = 2.5; Attributable risk percent among exposed = 60 %; Population attributable risk percent = 37.5 %; Implement smoking‑cessation programmes to reduce exposure.

About This Question

This is Waec Model Questions Vol1 2023 Biology Question 39. It is one of the objective questions from the 2023 Waec Model Questions Vol1 Biology examination.

Difficulty level: Hard .

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