title: A zero-inflated Poisson model of migration frequency.
abstract: "This paper shows that the frequency of migration can be best modeled by a zero-inflated Poisson process, because it takes into account the overwhelming presence of zeros (nonmigrants) in the data. A failure to do so can cause the coefficients to be biased and also result in poor prediction. The major finding is that by using a zero-inflated process, the performance of the model in predicting migration behavior is substantially improved. In addition, frequent movers tend to be white, nonunionized, and tend to have fewer children, less stable marriages, and more frequent occupational changes." Data are for the United States for the years 1977 to 1987 and are taken from the Panel Study of Income Dynamics.
authors.forename: A K
authors.initials: AK
authors.lastname: Bohara
authors.forename: R G
authors.initials: RG
authors.lastname: Krieg
mesh_terms: D000569:Americas; D003469:Culture; D003710:Demography; D019049:Developed Countries; D004641:Emigration and Immigration; D005006:Ethnicity; D005191:Family Characteristics; D008962:Models, Theoretical; D009656:North America; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D012106:Research; D014171:Transients and Migrants; D014481:United States; D044465:White People
keywords: Americas; Cultural Background; Demographic Factors; Developed Countries; Ethnic Groups; Family And Household; Family Characteristics; Family Size; Migrants; Migration; Models, Theoretical; Nonmigrants; North America; Northern America; Population; Population Characteristics; Population Dynamics; Research Methodology; Temporary Migration; United States; Whites