Estimation of a Conditional Copula and Association Measures

Abstarct. This paper is concerned with studying the dependence structure between two random variables Y ₁ and Y ₂ conditionally upon a covariate X. The dependence structure is modelled via a copula function, which depends on the given value of the covariate in a general way. Gijbels et al. (Comput. Statist. Data Anal., 55, 2011, 1919) suggested two non‐parametric estimators of the ‘conditional’ copula and investigated their numerical performances. In this paper we establish the asymptotic properties of the proposed estimators as well as conditional association measures derived from them. Practical recommendations for their use are then discussed.     

Social Patterning in Body Mass Index (BMI) Among Contemporary Immigrant Groups: The Emergence of a Gradient

Although adult body mass index (BMI) displays considerable social patterning worldwide, the direction and strength of the relationship between BMI and socioeconomic status (SES) varies cross nationally. We examine social gradients in BMI for contemporary U.S. immigrants and evaluate whether their SES-BMI gradient patterns are shaped by underlying gradients in immigrant origin countries and whether they are further patterned by time in the United States. Data come from the New Immigrant Survey, the only nationally representative survey of contemporary immigrants. Results indicate that the inverse SES-BMI gradients observed among this population are strongest among women originating in highly developed countries. After arrival in the United States, however, inverse gradient patterns are driven largely by higher weights among low-SES individuals, particularly those from less-developed countries. We conclude that although certain immigrants appear to be uniquely protected from weight gain, poorer individuals from less-developed countries are doubly disadvantaged; this raises concerns about worsening inequalities in both diet and behavior between the rich and poor upon arrival to the United States.     

Health Service Utilization Among Immigrants to the United States

This study uses data from the New Immigrant Survey and Andersen’s behavioral model, a commonly used framework for health care utilization, to examine the utilization patterns of Asian and Hispanic immigrants to the United States. Results indicate that the behavioral framework is well suited to predicting immigrants’ physician visits and dentist visits. However, this model is less appropriate for determining the likelihood of reporting a hospital as the primary source of medical care or immigrants’ use of non Western treatments. Importantly, years in the U.S. exhibits a robust, positive relationship with physician and dental visits for both groups even after controlling for several predisposing characteristics, self-assessed and physician-diagnosed need, pointing to the importance of this as an enabling factor in health care access and use.     

Housing Cost Burden and New Lawful Immigrants in the United States

Housing in the United States constitutes the largest expenditure for many households. Increasing rents and home prices, changes in the mortgage industry, and the growing importance of immigrants in the U.S. housing market underscore the value of examining the economic hardship that housing costs pose for immigrants. As is true for the native-born, immigrants’ allocation of financial resources to housing influences the funds available for savings, investments, survival of emergencies, and the overall economic well-being of children and families. This project employs 2003 national-level data of legal permanent residents from the New Immigrant Survey to examine an outcome lacking sufficient empirical study: the proportion of household income spent on housing. The study examines whether disparities in immigrant housing cost burden by country/region of origin persist after accounting for differences in human capital, stage in the life cycle, assimilation, and other factors. The analyses disaggregate immigrants from Latin America, Asia, Europe and other areas into more nuanced categories. The results document that after controlling for a diverse array of variables, legal immigrants vary widely in housing cost burdens by country/region of origin. These disparities have implications for the future wealth accumulation and long-term financial security of immigrants in the United States.     

U.S. Immigrants’ labor market adjustment: Additional Human capital investment and Earnings Growth

New Immigrant Survey-Pilot data are used to address the long-standing debate over whether immigrants to the United States assimilate economically. Using panel data and an individual fixed-effect specification, I find evidence indicating rapid economic assimilation, on the order of an average increase in earnings of 12%-13% during the 12-month survey period. Results indicate partial support for Duleep and Regets' Immigrant Human Capital Investment (IHCI) model, indicating an inverse relationship between initial earnings and earnings growth and showing some evidence of the expected interaction between skill transferability and skill level when predicting human capital investment decisions. Having more years of education, English proficiency, and lower earnings at the baseline are associated with a higher probability of enrolling informal school in the United States. Overall, findings suggest substantial economic integration within the first year after establishing permanent residency.     

Occupational Mobility Among Legal Immigrants to the United States1

Using data from the New Immigrant Survey Pilot, which follows immigrants for one year after receiving green cards, occupation in the U.S. is compared with that of the last job abroad. Fifty percent of immigrants experience downgrading. Among the highest‐skilled immigrants from Latin America and the Caribbean, more than three‐fourths end up in lower‐skilled jobs than what they had abroad. Human capital acquired in Latin America and the Caribbean is valued less than that from Europe, Australia, and Canada in the U.S. labor market, while immigrants with some U.S. education can increase the returns to that acquired previously abroad.     

Through the Front Door: The Housing Outcomes of New Lawful Immigrants1

Immigrants represent an increasingly vital component of the U.S. housing market, though there is a substantial and growing gap in homeownership rates between natives and the foreign born. We employ the New Immigrant Survey‐2003 to examine the housing tenure of immigrants recently adjusted to new legal permanent resident status. The results reveal important cross‐national differences in the linkages between transfers to the origin country, relationships with U.S. mainstream financial institutions, previous unauthorized experience, and housing tenure. Analyses also document that immigrants occupy three distinct housing outcomes in America; renting, owning, and living for free.     

Immigrant Intentions and Mobility in a Global Economy: The Attitudes and Behavior of Recently Arrived U.S. Immigrants*

Objectives. In this article we develop a conceptual model connecting immigrants' objective circumstances to satisfaction with life in the United States, intentions with regard to naturalization and settlement, and concrete behaviors such as remitting and leaving the country. Methods. We analyze data from the New Immigrant Survey Pilot to estimate structural equations derived from our conceptual model. Results. Those expressing a high degree of U.S. satisfaction are significantly more likely to intend to naturalize and, because of this fact, are also more likely to want to stay in the United States forever. In terms of socioeconomic characteristics, however, those with high earnings and owners of U.S. property are less likely to intend naturalizing; and those with high levels of education are least likely to be satisfied with the United States, but satisfaction is itself unrelated to remitting or emigrating, which are determined by citizenship intentions and objective circumstances. Conclusions. The picture that emerges from this analysis is of a fluid and dynamic global market for human capital in which the bearers of skills, education, and abilities seek to maximize earnings in the short term while retaining little commitment to any particular society or national labor market over the longer term.     

Contexts of English Language Use among Immigrants to the United States1

This analysis of New Immigrant Survey data indicates that the longer immigrants are in the U.S., the more likely they are to use English with friends, at work, at home, and with a spouse. The average immigrant arriving as a young adult has a predicted probability of using English with friends upon arrival of 0.44, a figure that doubles after 15 years in the U.S. The same average immigrant has a 0.40 probability of using English at home upon arrival, which rises to 0.55 after 15 years. The results suggest substantial language shift with the first generation.     

Wealth accumulation among U.S. immigrants: A study of assimilation and differentials

Data from the New Immigrant Survey are used to study wealth differentials among U.S. legal permanent residents. This study is unique in its ability to account for wealth held in the U.S. and that held abroad and yields several key findings. First, relative to immigrants from Western Europe, Australia, Canada, and New Zealand (who have median wealth similar to native born non-Hispanic whites), other immigrant groups have lower levels of total wealth even after accounting for permanent income and life course characteristics. Second, time in the U.S. is positively associated with the wealth of married immigrants, yet this relationship is not statistically significant for single immigrants. Third, differences in the means of measured characteristics between Western European immigrants and those from most other origin regions account for more than 75 percent of observed wealth disparities. However, for immigrants from Asia and from the Indian subcontinent, much of the wealth differential remains unexplained by these factors.