NR 503 Made Easy: A+ Questions and Answers. A 2025/2026
Study Guide
Terms in this set (34)
used to monitor changes in disease frequency or to monitor
Surveillance changes in the levels of risk factors. Most frequently
conducted for infectious diseases "on going systemic
collection, analysis, and interpretation of health data" Descriptive
Rates tells us how fast the disease in the population is occurring
Proportions tell us what fractions of the population is affected
is defined as the NEW number of cases of a disease that occur
Incidence rate of a disease
during a specific period of time in a population at risk
the incidence calculated using a period of time during which
Cumulative incidence
all of the individuals in the population are considered to be at
risk for the outcome
Person Time when different individuals are observed at different times (person years)
Different Periods of time # of NEW cases/total person-time
incidence rate
Identifying New Cases in order to knowing the baseline then re screening after a year to see the new
calculate incidence cases that have developed
number of people exposed to a suspect food who became ill/ #
Attack Rate
of people who were exposed to that food
# of affected persons present in the population at a specific time/ #
Prevalence of persons in the population at that time. This is view more of a
snapshot through the population at a
point in time. prevalence=incidence*duration of disease
prevalence of the disease at any time point during a certain time
Point prevalence
period (when you see the word prevalence without any modifier
it typically means point prevalence)
how many people have had the disease at a certain point during a certain
Period prevalence
time
period.
Study Guide
Terms in this set (34)
used to monitor changes in disease frequency or to monitor
Surveillance changes in the levels of risk factors. Most frequently
conducted for infectious diseases "on going systemic
collection, analysis, and interpretation of health data" Descriptive
Rates tells us how fast the disease in the population is occurring
Proportions tell us what fractions of the population is affected
is defined as the NEW number of cases of a disease that occur
Incidence rate of a disease
during a specific period of time in a population at risk
the incidence calculated using a period of time during which
Cumulative incidence
all of the individuals in the population are considered to be at
risk for the outcome
Person Time when different individuals are observed at different times (person years)
Different Periods of time # of NEW cases/total person-time
incidence rate
Identifying New Cases in order to knowing the baseline then re screening after a year to see the new
calculate incidence cases that have developed
number of people exposed to a suspect food who became ill/ #
Attack Rate
of people who were exposed to that food
# of affected persons present in the population at a specific time/ #
Prevalence of persons in the population at that time. This is view more of a
snapshot through the population at a
point in time. prevalence=incidence*duration of disease
prevalence of the disease at any time point during a certain time
Point prevalence
period (when you see the word prevalence without any modifier
it typically means point prevalence)
how many people have had the disease at a certain point during a certain
Period prevalence
time
period.
