The authors use Automatic Interaction Detector (AID) analysis to examine variables associated with net U.S. migration by county for the period 1970-1975. "The AID analyses also reveal various ways in which several factors combine to characterize places of substantial growth or decline through migration." Government employment is identified as a major factor associated with net positive migration
"Death rates from natural causes and from cardiovascular diseases, age 35-74, age-adjusted, by sex and race, by county and State Economic Area [of the United States] for 1968-1972 have been calculated...." The counties with extremely high or low death rates for white males are identified, and the reasons for the variations in mortality observed are considered
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