Dean’s shoe leather survey Comes under:
**Core Concept**
The Dean's shoe leather survey is a method used in epidemiology to study the incidence of diseases or events in a population. It involves observing and recording the frequency of specific conditions or behaviors in a community over time.
**Why the Correct Answer is Right**
The Dean's shoe leather survey is a type of observational study that relies on direct observation and recording of data in the field. This method is particularly useful for studying diseases or events that are common and easily observed, such as malaria or influenza outbreaks. By walking through the community and observing the shoes of individuals, researchers can collect data on the incidence and prevalence of these conditions.
**Why Each Wrong Option is Incorrect**
**Option A:** The Dean's shoe leather survey is not a type of laboratory-based study, which is what a "lab-based survey" would be.
**Option B:** The Dean's shoe leather survey is not a type of survey that relies on self-reported data, which is what a "self-report survey" would be.
**Option C:** The Dean's shoe leather survey is not a type of study that uses statistical models to analyze data, which is what a "statistical survey" would be.
**Clinical Pearl / High-Yield Fact**
The Dean's shoe leather survey is a classic example of an observational study, and it highlights the importance of direct observation in epidemiology. Remember that observational studies can be a powerful tool for understanding the incidence and prevalence of diseases in a population.
**Correct Answer: C. Observational study.**