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Biomedical subjects

D B Pittenger

Publications and source records attributed to D B Pittenger.

8 recordsLinked to original sources
PubMed1983

Improving the accuracy of migration age detail in multiple-area population forecasts.

Population projections are often required for many geographical areas, and must be prepared with maximal computer and minimal analytical effort. At the same time, realistic age detail forecasts require a flexible means of treating age-specific net migration. This report presents a migration projection technique compatible with these constraints. A simplified version of Pittenger's model is used, where future migration patterns are automatically assigned from characteristics of historical patterns. A comparative test of age pattern accuracy for 1970-1980 indicates that this technique is superior to the commonly used plus-minus adjustment to historical rates.

Adolescent↗
PubMed1981

On the persistence of U.S. migration rates in the 20th century.

The persistence or inertia of net migration rates in the United States during the twentieth century is measured. A set of basic migration data for states, counties, and state economic areas is described, and manipulations of these data are discussed. "The manipulated data are [then] analyzed graphically and by regression. The report concludes with a few remarks on the use of demographic extrapolations for planning and policy purposes."

Americas↗
PubMed1978

Population forecasts for health planning: an assessment of the state of the art.

Health planning agencies make use of age-sex detailed forecasts of population. This article evaluates sources of forecasts, notes the essential role of assumptions in forecasts, and indicates the general quality of techniques for projecting components of population change. It clarifies for health planners what demographers can--and can not--deliver.

Demography↗