NR-503 Epidemiology final ACTUAL Exam
Questions and CORECT Answers
exposed incidence - CORRECT ANSWER - incidence of new cases of disease in persons
who were exposed
exposed incidence equation - CORRECT ANSWER - number exposed with disease / total
number exposed
unexposed incidence - CORRECT ANSWER - incidence of new cases of disease in
persons who were not exposed
unexposed incidence equation - CORRECT ANSWER - number unexposed with disease /
total number of unexposed
incidence of disease - CORRECT ANSWER - measure of risk; total number in population
with disease divided by total number of population
incidence of disease equation - CORRECT ANSWER - number with disease / total
population
relative risk - CORRECT ANSWER - risk of disease in one group versus another; risk of
developing disease after exposure; 1 = no risk
relative risk equation - CORRECT ANSWER - # exposed with disease/total of all exposed
// # unexposed with disease/total all unexposed
odds ratio - CORRECT ANSWER - measure of exposure and disease outcome commonly
used in case control studies
, odds ratio equation - CORRECT ANSWER - R(exposed)/1-R(exposed) / R(unexposed)/1-
R(unexposed)
prevalence - CORRECT ANSWER - number of cases of a disease in a given time
regardless of when it began
prevalence equation - CORRECT ANSWER - (persons with disease / total pop) x1000
attributable risk - CORRECT ANSWER - difference in disease in those exposed and
unexposed, calculated from prospective data; directly attributed to exposure (if exposure gone,
disease gone)
attributable risk equation - CORRECT ANSWER - R(exposed) - R(unexposed)
crude birth rate - CORRECT ANSWER - number of live births per 1000 people in
population
crude birth rate equation - CORRECT ANSWER - (# of births/estimated mid-year
population) x1000
crude death rate - CORRECT ANSWER - the number of deaths per 1000 people in
population
crude death rate equation - CORRECT ANSWER - (# of deaths/estimated mid-year
population) x1000
fetal death rate - CORRECT ANSWER - number of fetal deaths (20+ wk gestation) per
1000 live births
fetal death rate equation - CORRECT ANSWER - (# of fetal deaths / # of live births+fetal
deaths) x1000
Questions and CORECT Answers
exposed incidence - CORRECT ANSWER - incidence of new cases of disease in persons
who were exposed
exposed incidence equation - CORRECT ANSWER - number exposed with disease / total
number exposed
unexposed incidence - CORRECT ANSWER - incidence of new cases of disease in
persons who were not exposed
unexposed incidence equation - CORRECT ANSWER - number unexposed with disease /
total number of unexposed
incidence of disease - CORRECT ANSWER - measure of risk; total number in population
with disease divided by total number of population
incidence of disease equation - CORRECT ANSWER - number with disease / total
population
relative risk - CORRECT ANSWER - risk of disease in one group versus another; risk of
developing disease after exposure; 1 = no risk
relative risk equation - CORRECT ANSWER - # exposed with disease/total of all exposed
// # unexposed with disease/total all unexposed
odds ratio - CORRECT ANSWER - measure of exposure and disease outcome commonly
used in case control studies
, odds ratio equation - CORRECT ANSWER - R(exposed)/1-R(exposed) / R(unexposed)/1-
R(unexposed)
prevalence - CORRECT ANSWER - number of cases of a disease in a given time
regardless of when it began
prevalence equation - CORRECT ANSWER - (persons with disease / total pop) x1000
attributable risk - CORRECT ANSWER - difference in disease in those exposed and
unexposed, calculated from prospective data; directly attributed to exposure (if exposure gone,
disease gone)
attributable risk equation - CORRECT ANSWER - R(exposed) - R(unexposed)
crude birth rate - CORRECT ANSWER - number of live births per 1000 people in
population
crude birth rate equation - CORRECT ANSWER - (# of births/estimated mid-year
population) x1000
crude death rate - CORRECT ANSWER - the number of deaths per 1000 people in
population
crude death rate equation - CORRECT ANSWER - (# of deaths/estimated mid-year
population) x1000
fetal death rate - CORRECT ANSWER - number of fetal deaths (20+ wk gestation) per
1000 live births
fetal death rate equation - CORRECT ANSWER - (# of fetal deaths / # of live births+fetal
deaths) x1000
