5Quizzes
Epidemiology
Explore how diseases spread, how outbreaks are controlled, and how data drives public health decisions. Topics include R₀, study designs, risk factors, and global health.
Bias and Confounding
An advanced quiz on the sources of error that can invalidate study results.
Epidemiological Study Designs
Compare and contrast cohort, case-control, and cross-sectional studies.
Measures of Disease Frequency
A beginner quiz on incidence, prevalence, morbidity, and mortality.
Outbreak Investigation
The steps to investigating a foodborne or infectious disease outbreak.
Understanding R0 (R-nought)
A quiz on the basic reproduction number and its role in disease modeling.
Articles
Read About Epidemiology
Long-form articles on the same ground as these quizzes.
Dictionary
Key Epidemiology Terms
Plain definitions, with how to say each word and where it comes from.
- Basic reproduction number
The basic reproduction number, R0, is the average number of people one infectious person would infect in a population with no immunity.
- Case fatality rate
The case fatality rate is the share of people diagnosed with a particular disease who die of it, a basic measure of how severe that disease is.
- Case–control study
A case–control study is an observational study that compares people with a disease and people without it to find past exposures linked to it.
- Cohort study
A cohort study is an observational study that follows groups differing in an exposure over time to compare how often they develop an outcome.
- Confounding
Confounding is a distortion in a study where a third factor, linked to both the exposure and the outcome, creates, hides or exaggerates an apparent effect.
- Endemic
In epidemiology, endemic describes a disease that is always found in a population or region at a fairly steady, expected level.
Diagrams
See Epidemiology Drawn
Interactive diagrams to step through before a quiz, every part linked to its definition.
- Chain of Infection diagram
The six links of the chain of infection, from infectious agent to susceptible host, and how hand hygiene, PPE, cleaning and vaccination break each one.
Career
Where Epidemiology Leads
Careers that use it: what each job is, how people get in and what it pays.
- Biostatistician
Applies statistics to questions in biology and medicine, from designing clinical trials to analysing the data that shows whether a treatment works.
- Clinical Data Manager
Makes sure the data collected in clinical trials is complete, accurate and ready for analysis, from the first patient to the final database.
- Epidemiologist
Studies how disease spreads and who it affects, finding causes and risk factors so health services can prevent and control illness.
- Health Promotion Specialist
Designs and runs programmes that help people and communities stay healthy, from stop-smoking schemes to sexual and mental health campaigns.
- Clinical Research Associate
Monitors clinical trials of new medicines and devices, checking that each trial site follows the protocol, protects patients and records accurate data.
- Data Scientist
Turns large, messy datasets into answers, using programming, statistics and machine learning to find patterns and build predictive models.
Research
Calculators for Epidemiology
Free, with the formula and a worked example for each.
- Sample Size and Power Calculator
How many participants a survey or a two-group study needs, or the power of the sample you have, with a paragraph for your methods.
Keep Exploring
Related Disciplines
Subjects close to Epidemiology, each with its own set of quizzes.
All 35 disciplines