Neco 2024 Biology Question 19

Practice objective / multiple choice question 19 from the 2024 Neco Biology examination.

Neco 2024 Biology Objective / Multiple Choice Hard Difficulty
Question 19 NECO • 2024 • BIOLOGY • objective

In a community health survey, 2000 individuals were examined. Among them, 400 are smokers and 1600 are non‑smokers. Chronic bronchitis was diagnosed in 80 smokers and 40 non‑smokers. (i) Calculate the incidence of chronic bronchitis in smokers and in non‑smokers (expressed as a percentage). (ii) Compute the relative risk (RR) of chronic bronchitis for smokers compared with non‑smokers. (iii) Determine the attributable risk percent among the exposed (AR%). (iv) Calculate the population attributable risk percent (PAR%).

Answer Options

A. Incidence smokers: 25 %; Incidence non‑smokers: 3 %; RR: 8.3; AR%: 87.9 %; PAR%: 60.0 %
B. Incidence smokers: 18 %; Incidence non‑smokers: 2.5 %; RR: 7.2; AR%: 86 %; PAR%: 57 %
C. Incidence smokers: 20 %; Incidence non‑smokers: 3 %; RR: 6.7; AR%: 85 %; PAR%: 55 %
Correct Answer D. Incidence smokers: 20 %; Incidence non‑smokers: 2.5 %; RR: 8.0; AR%: 87.5 %; PAR%: 58.3 %
Correct Answer
D
Correct Option:
Incidence smokers: 20 %; Incidence non‑smokers: 2.5 %; RR: 8.0; AR%: 87.5 %; PAR%: 58.3 %

About This Question

This is Neco 2024 Biology Question 19. It is one of the objective questions from the 2024 Neco Biology examination.

Difficulty level: Hard .

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