Epidemiology Final exam review| 51 questions| with complete solutions

mortality rate correct answer: Total no of deaths from all causes in year/No of persons in the population at midyear *time must be specified* cause specific mortality rate correct answer: - limiting the rate of death to a certain disease - No of deaths from lung cancer in one year/ No of persons in the population at midyear case-fatality rate correct answer: - % of people who have a certain disease die within a certain time after diagnosis - measure severity of the disease - No of individuals dying during a specified period of time after disease onset or diagnosis/No. of individuals with the specified disease morbidity correct answer: usually refers to the incidence of disease in the population absolute risk correct answer: - incidence of a disease in a population - indicate the magnitude of the risk in a group of people with a certain exposure, but because it does not take into consideration the risk of disease in nonexposed individuals relative risk formula correct answer: (risk in exposed)/(risk in nonexposed) relative risk correct answer: probability of developing a disease in exposed people compared to the probability of developing a disease in nonexposed people, - ratio of the two probabilities. - used in COHORT studies how to interpret relative risk correct answer: - RR= 1: no association - RR>1: positive association, possibly causal -RR<1: negative association, possibly protective odds ratio for cohort studies correct answer: - (odds that an exposed person develops disease) / (odds that a non-exposed person develops disease) - (a/b)/(c/d) = (ad/bc) odds ratio for case control studies correct answer: - (odds that a case was exposed)/(odds that a control was exposed) - ad/bc attributable risk correct answer: amount/proportion of disease incidence (or disease risk) that can be attributed to a specific exp