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Epi Terms

Horizontales
The difference between the predicted value (often from a regression equation) and the actual or observed value
A collection of objects, events or individuals having characteristics that a researcher may be interested in studying
An inferential statistical method that develops equations from empirical random samples to make predictions about the values of a dependent variable based on the values of one or more independent variables with known probabilities of accuracy
A type of ratio in which the numerator is included in the denominator
Refers to the ability of a study to detect a true difference
The occurrence in a community or region of a group of cases of an illness (or an outbreak) clearly in excess of normal expectancy
The number of patients who have a negative test and do not have the disease divided by the number of patients who do not have the disease
The extent to which repeated measurements of a relatively stable phenomenon fall closely to each other
The extent to which an observation reflects the "truth" of the phenomenon being measured
A distribution that is asymmetrical
A supposition, arrived at from observation or reflection, that leads to refutable predictions
A disease that occurs infrequently and irregularly
Verticales
A measure of central location, the most frequently occurring value in a set of observations
Changes over a long period of time, generally years or decades
Deviation of results from the truth
The difference between the maximum and minimum values in the distribution
An epidemic occurring over a very wide area (several countries or continents) and usually affecting a large proportion of the population
A measure of the dispersion shown by a set of observations, defined by the sum of the squares of deviations from the mean, divided by the number of degrees of freedom in the set of observations
The usual prevalence or constant presence of a disease or infectious agent in a given geographic area or population group
A causal factor whose presence is required for the occurrence of the effect (of disease)
The number of patients with a positive test who have a disease divided by all patients who have the disease
A probability that an individual will become ill within a stated period of time or age
A measure of the frequency with which an event occurs in a defined population over a specified period of time
A long-term movement or change in frequency, usually upwards or downwards