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Epi - HEA602
definitions, matching, & equations sections
32
Other
Graduate
03/19/2011

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Term
Crude Rate
Definition
disregards differences in populations due to sex, age, race, etc.
Term
Specific Rate
Definition
controls for differences by comparing across sub-groups
Term
Reliability
Definition
repeatability
Term
Placebo
Definition
an inert substance that looks, tastes, and smells like the active agent
Term
Prevalence
Definition
# of affected persons present in the population at a specific time divided by # of persons in the population at that time
Term
Intrasubject variation
Definition
inconsistency in measures of a person's characteristics during a short period of time
Term
Internal Validity
Definition
absence of major methodological problems in a study
Term
External Validity
Definition
generalizability
Term
Validity
Definition
accuracy
Term
Specificity
Definition
ability to test to identify people who really do not have disease
Term
Incidence
Definition
new cases of disease in a specific time in a population at risk for developing the disease
Term
Adjusted Rate
Definition
controls for differences in populations by standardizing either the population or the rate
Term
Cross-sectional Study
Definition
measure exposure and disease at the same time
Term
Active Surveillance
Definition
project staff make periodic visits to health care facilities to identify new cases
Term
Passive Surveillance
Definition
available data is used or reporting is mandated
Term
Herd Immunity
Definition
The resistance of a group to an attack by disease to which a large proportion of the member of the group are immune
Term
Incubation period
Definition
the interval from receipt of infection to the time of onset of clinical illness
Term
Validity
Definition
The ability of a test to distinguish between who has disease and who does not have disease
Term
Specificity
Definition
the proportion of non-diseased people who are correctly identified as negative by a test
Term
Reliability
Definition
repeatability of diagnostic and screening test
Term
External validity
Definition
The generalization of a study
Term
Proportionate mortality
Definition
[Number of deaths from a particluar cause in a particular time and place ÷ total deaths in a particular time and place] * 100
Term
Epidemiology
Definition
The study of how disease is distributed in a population and factors that influence or determine this distribution.
Term

Cumulative Incidence

 

Definition
NUMBER OF NEW CASES IN A PERIOD OF TIME ÷ NUMBER OF PEOPLE IN THE POPULATION DURING THAT PERIOD OF TIME
Term
Point Prevalence
Definition
NUMBER OF CASES OF A DISEASE PRESENT IN THE POPULATION AT A SPECIFIED TIME ÷ NUMBER OF PERSONS IN THE POPULATION AT THAT SPECIFIED TIME
Term
Mortality Rate
Definition
NUMBER OF DEATHS FROM ALL CAUSES IN 1 YEAR ÷ NUMBER OF PERSONS IN THE POPULATION AT MID-YEAR
Term
Case-Fatality Rate
Definition
NUMBER OF INDIVIDUALS DYING DURING A SPECIFIED PERIOD OF TIME AFTER DISEASE ONSET OR DIAGNOSIS ÷ NUMBER OF INDIVIDUALS WITH THE SPECIFIED DISEASE
Term
Relative Risk
Definition
INCIDENCE IN THE EXPOSED ÷ INCIDENCE IN THE REFERENT
Term
Odds
Definition
PROBABILITY THAT A PERSON DEVELOPS DISEASE ÷ PROBABILITY THAT A PERSON DOES NOT DEVEKLOP DISEASE
Term
Attributable Risk (population)
Definition
INCIDENCE IN THE POPULATION − THE INCIDENCE IN THE NON-EXPOSED GROUP
Term
Attributable Risk Proportion (exposed)
Definition
INCIDENCE IN EXPOSED GROUP − THE INCIDENCE IN THE NON-EXPOSED GROUP ÷ INCIDENCE IN EXPOSED GROUP
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