title: Population change and its components in Pennsylvania, 1980-1990.
abstract: The author analyzes patterns of population growth in Pennsylvania by county.  "Although Pennsylvania's population increased only slightly from 1980-1990, the pattern of change portrays noteworthy growth in many counties in the eastern half of the Commonwealth and decline throughout much of the west.... Analysis of the components of change--fertility, mortality, and net-migration--reveals significant differences in the role played by reproductive change in the demographic equation among counties which grew in population and, to a lesser extent, among those which declined.  Changes in numbers of inhabitants and their components are related to location and selected demographic, social, and economic characteristics of the county populations."
authors.forename: G A
authors.initials: GA
authors.lastname: Schnell
mesh_terms: D000569:Americas; D003710:Demography; D019049:Developed Countries; D004467:Economics; D005298:Fertility; D005843:Geography; D009656:North America; D010414:Pennsylvania; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D011158:Population Growth; D012725:Sexual Behavior; D012959:Socioeconomic Factors; D014481:United States
keywords: Administrative Districts; Americas; Counties; Demographic Factors; Developed Countries; Economic Factors; Fertility; Geographic Factors; North America; Northern America; Pennsylvania; Population; Population Characteristics; Population Dynamics; Population Growth; Reproductive Behavior--changes; Socioeconomic Factors; Spatial Distribution--changes; United States