the study of the distribution and determinants of health related states or events in specified populations.
an unexpectedly large number of case of an illness, specific health related behavior, or other health related event in a particular population.
population at risk
those in the population who are susceptible to a particular disease or condition.
the number of new health related events or cases of a disease in a population exposed to that risk during a particular period of time divided by the total number in that same population.
the number of new and old cases of a disease in a population in a given period of time, divided by the total number in that population. most useful for health care professionals
an incidence rate calculated for a particular population for a single disease outbreak and expressed as a percentage.
crude death rate (CDR)
THE NUMBER OF DEATHS (FROM ALL CAUSES) PER 1,000 IN A POPULATION INA GIVEN PERIOD OF TIME.
age adjusted rate
rate used to make comparisons of relative risks across groups and over time when groups differ in age structure.
proportionate mortality rate (PMR)
the percentage of overall mortality in a population that is attributable to a particular cause.
infectious diseases for which health officials request or require reporting for public health reasons.
National Electronic Telecommunications System (NETS)
the electronic reporting system used by state health departments and the CDC.
the average number of years a person from a specific cohort is projected to live from a given point in time.
years of potential life lost (YPLL)
the number of years lost when death occurs before the age of 65 or 75 (prematurely).
disability adjusted life years (DALYs)
a measure for the burden of disease that takes into account premature death and loss of healthy life resulting from disability.
Health adjusted life expectancy (HALE)
the number of years of healthy life expected, on average in a given population.