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What epidemiology sees — and what it cannot.
Question banks for Epidemiology in the Arab World, one chapter at a time. Five hundred and forty questions across all eighteen chapters of the book, each keyed to a learning objective and answered with its reasoning. The bank is complete.
Written for students of public health and epidemiology by Yahya M. Al-Farsi, Professor of Public Health and Epidemiology, Sultan Qaboos University. The book is open access (Cordelia Press, 2026, CC BY 4.0); the questions follow its chapters and use its cases: two patients in a Muscat health centre, outdoor workers in summer heat, a ministry report that forgot its denominator.
Chapters 1–18 — Seeing population health, producing evidence, judging it, and putting it to work
Seventy-two groups of questions following each chapter's sections: what epidemiology sees, populations and denominators, measuring disease frequency, comparing populations, where health data come from, descriptive and ecological studies, case-control studies, cohort studies, trials, chance and precision, bias, confounding, effect modification, from association to causation, screening, surveillance and outbreaks, crisis, conflict and displacement, and from evidence to action. Each is marked the moment you answer it, and every answer carries its reasoning and the section to re-read. The arithmetic items — risk ratio, risk difference, counts against rates — open their working.
Whole chapters, timed
Thirty questions per chapter, thirty minutes, no feedback until the end — closer to the conditions of an examination. Marking and full working come with your result.