Free Epidemiology practice for NEET PG and INI-CET Community Medicine, with a written explanation on every question.
9 questions · Free explanations
Showing 1–9 of 9 questions
Q1 · Incidence and Prevalence
NEET PGEasyExplanation
Prevalence is approximately incidence multiplied by mean duration. For long-lasting chronic diseases cases accumulate, so prevalence exceeds incidence. Short, quickly resolving diseases show the opposite.
Q2 · Study Designs
NEET PGMediumExplanation
A case-control study starts with cases and controls and looks backward for exposure, making it efficient for rare diseases and yielding an odds ratio. Cohort studies are impractical for rare outcomes because huge numbers are needed.
Q3 · Measures of Association
NEET PGMediumExplanation
A cohort study follows exposed and unexposed groups forward, allowing direct calculation of incidence and relative risk. A case-control study yields the odds ratio, which approximates relative risk for rare diseases.
Q4 · Screening Bias
HardExplanation
Lead-time bias overstates survival benefit when early detection advances the diagnosis date without postponing death, so survival measured from diagnosis merely appears longer. Length-time bias and overdiagnosis are related screening pitfalls.
Q5 · Epidemic Types
MediumExplanation
A point-source epidemic, such as food poisoning at an event, produces a single sharp peak with all cases within one incubation period. A propagated epidemic shows successive peaks as it spreads person to person.
Q6 · Herd Immunity
NEET PGEasyExplanation
Herd immunity is the protection of a whole population, including the non-immune, when a sufficiently high proportion is immune so transmission is interrupted. The threshold depends on the disease's basic reproduction number.
Q7 · Levels of Prevention
MediumExplanation
Immunisation is primary prevention: it prevents disease occurring in a susceptible but healthy person. Secondary prevention is early detection through screening, and tertiary prevention limits disability in established disease.
Q8 · Reproduction Number
HardExplanation
R0 is the average number of secondary infections produced by one case in a fully susceptible population. If R0 exceeds 1 an epidemic can grow, and interventions aim to push the effective reproduction number below 1.
Q9 · Disease Surveillance
EasyExplanation
Surveillance is the ongoing systematic collection, analysis and interpretation of health data, with timely dissemination to those who need it, enabling early detection and response to outbreaks and trends.
Epidemiology sits within Community Medicine, which carries the same syllabus in both exams. This set runs to 9 questions, each tagged Easy, Medium or Hard, 2 of them at Hard, and 4 drawn from previous-year papers.
Answer first, then read the explanation even on the ones you got right — the reasoning is where Epidemiology marks are actually won, and it is what separates a recalled fact from a question you can solve in a new form. Once the Easy set feels comfortable, filter to Hard to find the gaps Community Medicine examiners keep returning to.
FAQ
Yes. Every question and explanation in this Epidemiology set is free and open — no login, no form and no payment. The explanation appears the moment you answer.
Epidemiology sits within Community Medicine, which appears in the same form in both syllabuses. Biostatistics, epidemiology and the national health programmes. Numbers-heavy, and among the most predictable scoring areas in the paper.
No. No account, no password, no OTP. Answer in the browser and your answers stay on your device for the session.