Igcse Model Questions Vol1 2021 Biology Question 29

Practice objective / multiple choice question 29 from the 2021 Igcse Model Questions Vol1 Biology examination.

Igcse Model Questions Vol1 2021 Biology Objective / Multiple Choice Hard Difficulty
Question 29 IGCSE_MODEL_QUESTIONS_VOL1 • 2021 • BIOLOGY • objective

In a population study of 2000 individuals, 500 are smokers and 1500 are non‑smokers. Among smokers, 40 develop lung disease; among non‑smokers, 30 develop lung disease. Calculate the relative risk of lung disease for smokers compared with non‑smokers and the population attributable fraction (PAF) for smoking.

Answer Options

A. Relative risk = 5; Population attributable fraction ≈ 56 %
B. Relative risk = 2; Population attributable fraction ≈ 14 %
C. Relative risk = 3; Population attributable fraction ≈ 30 %
Correct Answer D. Relative risk = 4; Population attributable fraction ≈ 43 %
Correct Answer
D
Correct Option:
Relative risk = 4; Population attributable fraction ≈ 43 %

About This Question

This is Igcse Model Questions Vol1 2021 Biology Question 29. It is one of the objective questions from the 2021 Igcse Model Questions Vol1 Biology examination.

Difficulty level: Hard .

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