NBME CBSE REAL EXAM 200 QUESTIONS AND ANSWERS LATEST (usmle step 1)MEDICAL EXAMINATION

NBME CBSE REAL EXAM 200 QUESTIONS AND ANSWERS LATEST (usmle step 1)MEDICAL EXAMINATION What is a case series? - AnswersDescription of clinical findings/symptoms for several patients with the same diagnosis, treatment, or outcome. What is a cross-sectional study? - AnswersAssesses the frequency of disease and risk-related factors in the present. What is a case-control study? - AnswersRetrospectively compares a group of people with a disease to a group without the disease to determine if odds of prior exposure/risk factor differ. What is a cohort study? - AnswersCompares a group of people with a given exposure/risk factor to a group without exposure to determine if the exposure/risk factor is associated with later development of disease. What is a twin concordance study? - AnswersCompares the frequency with which both monozygotic twins vs both dizygotic twins develop the same disease to measure heritability and influence of environmental factors. What is an adoption study? - AnswersCompares behavioral traits/genetics in siblings raised by biological vs adoptive parents to measure heritability and influence of environmental factors. What is an ecological study? - AnswersCompares the frequency of disease and risk-related factors across populations to measure population data (not applicable to individuals). What is a clinic therapeutic trial? - AnswersAn experimental study involving humans that compares the benefits of two or more interventions.