Studies in which subsets of a defined population are identified. These groups may or may not be exposed to factors hypothesized to influence the probability of the occurrence of a particular disease or other outcome. Cohorts are defined populations which, as a whole, are followed in an attempt to determine distinguishing subgroup characteristics.
A personality disorder whose essential feature is a pervasive pattern of disregard for, and violation of, the rights of others that begins in childhood or early adolescence and continues into adulthood. The individual must be at least age 18 and must have a history of some symptoms of CONDUCT DISORDER before age 15. (From DSM-IV, 1994).
Systems that provide for the maintenance of life in an isolated living chamber through reutilization of the material available, in particular, by means of a cycle wherein exhaled carbon dioxide, urine, and other waste matter are converted chemically or by photosynthesis into oxygen, water, and food. (NASA Thesaurus, 1988)
--subdivision Fire, [date] under names of individual corporate bodies, buildings, structures, etc.; also subdivision Fires and fire prevention under types of institutions, buildings, industries, materials, and vehicles, e.g. Psychiatric hospitals--Fires and fire prevention; Warehouses--Fires and fire prevention; Construction industry--Fires and fire prevention; Metals--Fires and fire prevention; Automobiles--Fires and fire prevention; and subdivision Effect of fires on under individual animals and groups of animals, and individual plants and groups of plants, e.g. Fishes--Effect of fires on; Corn--Effect of fires on
