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| Study conducted during a foodborne- illness investigation where the investigators ask whether the suspect food was waten or not eaten |
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| A bias that may occur because an association observed between variables on an aggregate level does not necessarily represent the association that exists at an individual level. |
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| A study in which the units of analysis are populations or groups of people, rather than individuals. |
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| The change of one factor alters the outcome involved. Using a factor, i.e. age, to modify the effect of a putative causal factor under study. |
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| The extent to which a specific intervention, procedure, regimen, or service produces a beneficial result under ideal conditions. |
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| Commercially available statistical software for logistic regression. |
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| Enzyme-linked immunosorbent assay |
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| Epidemic Intelligence Service |
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| The habitual presence of a disease within a given geographic area. Also referred to as the usual occurrence of a given disease within such an area. |
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| Expanded Programme on Immunization |
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| Field statistical epidemiology software developed by the CDC. |
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| The occurrence in a community or region of a group or illnesses of similar nature, clearly in excess of normal expectancy, and derived from a common or a propagated source. |
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defn.1 The study of how disease is distributed in populations and of the factors that influence or determine this distribution.
defn. 2 The study of the distribution and determinants of health-related states or events in specified populations and the application of this study to control health problems. |
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| All that which is external to the individual human host. |
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| A graphic plotting for the distribution of cases by times of onset. |
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| synonymous with attributable fraction. |
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| The absolute difference between the rates of disease in the entire population and the rates of disease among the non-exposed. |
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| The ability to generalize your treatment over an entire population based on the results of your sample study population. |
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