Epidemiology — Flashcards

Flashcard 231: Beta-thalassemia is most commonly seen in individuals of _____ or Mediterranean descent

Answer: African

Flashcard 232: _____ rate = # of new cases / # of people at risk during a specified time period

Answer: Incidence

Flashcard 233: CIR has a range from _____ and must be accompanied by a specific time period to have any meaningful interpretation

Answer: 0-1

Flashcard 234: Type _____ poliovirus is the most common cause of endemics

Answer: 2

Flashcard 235: An IDR of 0 implies that a disease is _____ in a population whereas an IDR of infinity implies instantaneous, universal effect on population

Answer: not occuring

Flashcard 236: _____ = sensitivity / (1 - specificity)

Answer: Positive likelihood ratio

Flashcard 237: The _____ rate is one way of measuring the virulence of the disease or infection

Answer: case fatality

Flashcard 238: Using a placebo allows you to _____ the interventions, helping reduce measurement bias

Answer: blind

Flashcard 239: An **incidence rate** is a measure of new cases occurring in _____ during a specified period of time

Answer: a population at risk

Extra: Incidence is a **rate** (measures new cases over time). Prevalence is a **proportion** (measures existing cases at a point/period in time). **Incidence Rate** = (New cases during a period) / (Population at risk during that period) × Multiplier

Flashcard 240: An Attack Rate is a special type of _____ that is the (# of people affected)/(# of people at risk at beginning of time period)

Answer: CIR