County

System of classification based on the nation in which an individual was exposed to a disease, regardless of the nation in which…

An alphanumeric system designed to identifiy countries. The ISO 3166 standard includes a two letter representation, a three letter representation, and a…

A collective generic term that refers here to a wide variety of dependencies, areas of special sovereignty, uninhabited islands, and other entities…

The observed count rate divided by that expected if all events were counted.

Circular movement in the direction opposite to the rotation of the hands of a clock.

A weight designed to counteract the effects of another weight.