Waec Model Questions Vol1 2024 Biology Question 49
Practice objective / multiple choice question 49 from the 2024 Waec Model Questions Vol1 Biology examination.
In a case‑control study of a disease, 120 cases and 180 controls were recruited. Among the cases, 78 reported a certain dietary habit; among the controls, 54 reported the habit. (a) Compute the odds ratio (OR) for the association. (b) Interpret the OR in terms of risk. (c) If the prevalence of the disease in the general population is 5 %, estimate the population attributable fraction (PAF) assuming the OR approximates the relative risk and that the exposure prevalence in the population equals that observed among the controls.
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This is Waec Model Questions Vol1 2024 Biology Question 49. It is one of the objective questions from the 2024 Waec Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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