Epidemiology Merrill CH 1

What is epidemiology?

• The study of diseases

• The study of epidemics

• The study of populations and their health

• The study of viruses

What is the main goal of epidemiology?

• To prevent diseases

• To study viruses

• To understand the human body

• To study populations and their health

Which of the following is NOT a subtopic of epidemiology?

• Introduction to Epidemiology

• Epidemiologic Measures

• Epidemiologic Study Designs

• Introduction to Virology

What are the two main types of epidemiologic studies?

• Observational and experimental

• Descriptive and analytical

• Cross-sectional and case-control

• Cohort and intervention

Which of the following is an example of a descriptive epidemiologic study?

• Randomized controlled trial

• Case-control study

• Cohort study

• Surveillance study

What is the purpose of an analytical epidemiologic study?

• To describe the distribution of diseases

• To determine the cause of diseases

• To study the effects of diseases

• To prevent diseases

Which of the following is a measure of disease frequency?

• Odds ratio

• Relative risk

• Prevalence

• Sensitivity

What is the difference between prevalence and incidence?

• Prevalence is the number of new cases, while incidence is the total number of cases

• Prevalence is the total number of cases, while incidence is the number of new cases

• Prevalence is the number of cases in a specific population, while incidence is the number of cases in the general population

• Prevalence is the number of cases in the general population, while incidence is the number of cases in a specific population

Which of the following is a type of bias in epidemiologic studies?

• Selection bias

• Confounding bias

• Information bias

• All of the above

What is the purpose of randomization in experimental studies?

• To ensure equal distribution of confounding factors

• To select a representative sample

• To minimize selection bias

• To increase the power of the study