Neco 2021 Biology Question 39

Practice objective / multiple choice question 39 from the 2021 Neco Biology examination.

Neco 2021 Biology Objective / Multiple Choice Hard Difficulty
Question 39 NECO • 2021 • BIOLOGY • objective

A case‑control study of lung cancer includes 2000 participants, of whom 800 are smokers and 1200 are non‑smokers. Among the smokers, 120 develop lung cancer, while among the non‑smokers, 30 develop lung cancer. Calculate (i) the relative risk (RR) of lung cancer for smokers compared with non‑smokers, (ii) the attributable risk percent (AR%) among smokers, and (iii) the population attributable fraction (PAF) for the whole study population. Express percentages to one decimal place.

Answer Options

A. RR = 6.5, AR% = 85.0%, PAF = 70.0%
B. RR = 5.0, AR% = 80.0%, PAF = 60.0%
Correct Answer C. RR = 6.0, AR% = 83.3%, PAF = 66.7%
D. RR = 4.0, AR% = 75.0%, PAF = 55.0%
Correct Answer
C
Correct Option:
RR = 6.0, AR% = 83.3%, PAF = 66.7%

About This Question

This is Neco 2021 Biology Question 39. It is one of the objective questions from the 2021 Neco Biology examination.

Difficulty level: Hard .

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