Biostatistics and epidemiology
Incidence, prevalence, attack rate and case fatality
Definitions and worked calculations for incidence (risk and rate), prevalence, attack rate, case fatality and population attributable risk, and how they relate to one another.
Tier 1Medical sciences concept
Written with AI assistance and fact-checked against the sources below. For exam study, not clinical decisions. How notes are made
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Sources
- Gordis Epidemiology (6th ed.)Elsevier (Celentano and Szklo, 2019), 2019
- Modern Epidemiology (4th ed.)Wolters Kluwer (Lash, VanderWeele, Haneuse and Rothman, 2021), 2021
- Australian National Notifiable Diseases Surveillance System (NNDSS)AU/NZAustralian Centre for Disease Control
- Principles of Epidemiology in Public Health Practice (3rd ed.), Lesson 3: Measures of RiskUS Centers for Disease Control and Prevention (2012), 2012
- Ferguson J et al. Bias assessment and correction for Levin's population attributable fraction in the presence of confounding. Eur J Epidemiol 2024;39:111-9European Journal of Epidemiology, 2024
- Last updated
- 14 November 2026
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