Igcse Model Questions Vol1 2023 Biology Question 39

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

Igcse Model Questions Vol1 2023 Biology Objective / Multiple Choice Hard Difficulty
Question 39 IGCSE_MODEL_QUESTIONS_VOL1 • 2023 • BIOLOGY • objective

In a community health survey, 1000 people are exposed to a certain airborne pollutant and 1000 are not. Among the exposed group, 80 develop a chronic respiratory disease, whereas only 20 cases occur in the unexposed group. (a) Calculate the relative risk (RR) and the odds ratio (OR) for developing the disease due to exposure. (b) Compute the attributable risk percent (ARP) among the exposed. (c) Based on these figures, recommend a public‑health action.

Answer Options

A. RR = 4.0; OR ≈ 4.3; ARP = 60 %; recommendation - monitor air quality but no immediate action required.
B. RR = 5.0; OR ≈ 5.5; ARP = 80 %; recommendation - increase public awareness campaigns about the pollutant.
C. RR = 3.0; OR ≈ 3.2; ARP = 65 %; recommendation - implement regular health screenings for the exposed population.
Correct Answer D. RR = 4.0; OR ≈ 4.3; ARP = 75 %; recommendation - reduce or eliminate exposure to the pollutant.
Correct Answer
D
Correct Option:
RR = 4.0; OR ≈ 4.3; ARP = 75 %; recommendation - reduce or eliminate exposure to the pollutant.

About This Question

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

Difficulty level: Hard .

View More Igcse Model Questions Vol1 2023 Biology Questions More Igcse Model Questions Vol1 Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support