Epidemiology QuizVersion en ligne Test your knowledge of epidemiology with these 10 questions! par Fathimathusalma O 1 What is the primary goal of epidemiology? Choose one or more answers a To study the distribution and determinants of health-related states or events in populations b To focus on personal health behaviors c To study individual health outcomes d To promote specific medical treatments 2 What is the difference between incidence and prevalence? a Incidence measures the total number of cases, while prevalence measures the rate of new cases b Incidence is the rate of new cases in a population, while prevalence is the total number of cases at a specific time c Incidence and prevalence are the same d Prevalence measures the rate of new cases, while incidence measures the total number of cases 3 What is a case-control study design used for? a To study the incidence of diseases in a population b To compare individuals with a specific disease to those without the disease c To determine the effectiveness of a treatment d To assess the prevalence of a disease in a community 4 What is a confounder in epidemiology? a A variable that has no impact on the relationship between the exposure and outcome b A variable that strengthens the relationship between the exposure and outcome c A variable that distorts the true relationship between the exposure and outcome d A variable that is not relevant to the study 5 What is the purpose of randomization in a clinical trial? a To guarantee that all participants receive the same treatment b To increase the likelihood of a positive outcome c To minimize bias and ensure that treatment groups are comparable d To allow participants to choose their treatment 6 What is the difference between observational and experimental studies? a Observational studies are more reliable than experimental studies b Experimental studies are purely theoretical c Observational studies observe individuals in their natural settings, while experimental studies involve interventions d Observational studies are conducted in a laboratory setting 7 What is a cross-sectional study design used for? a To follow individuals over a long period to study disease incidence b To collect data at a single point in time to assess the prevalence of a condition c To compare individuals with and without a disease to identify risk factors d To test the effectiveness of a new treatment 8 What is the purpose of a cohort study? a To analyze the prevalence of diseases in a population b To determine the cause of a specific disease c To compare different groups of individuals at a single point in time d To follow a group of individuals over time to study the development of diseases 9 What is the difference between relative risk and odds ratio? a Odds ratio is a measure of association, while relative risk is a measure of effect b Relative risk is always higher than odds ratio c Relative risk compares the risk of an event in exposed versus unexposed groups, while odds ratio compares the odds of an event in exposed versus unexposed groups d Relative risk is used in observational studies, while odds ratio is used in experimental studies 10 What is the concept of herd immunity in epidemiology? a When a disease affects only a small group of individuals b When a disease spreads rapidly within a population c When a sufficient proportion of a population is immune to a disease, it provides indirect protection to those who are not immune d When individuals are resistant to all diseases
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