Age-sex structure of the United States in 2000: Early results from Census 2000

Recently data on age and sex for the United States have beenreleased in the Census 2000 data product Summary File 1. This paper presents someearly analysis on the shape of the age and sex structure from Census 2000 data throughstatistics and graphics on national and sub-national levels. Also highlighted are comparisonswith data from the 1990 census.     

Reconsidering the increase in father-only families

Previously reported estimates of rapid growth rates among father-only families did not account for cohabitation. An explicit treatment of cohabitation removes about half of the presumed growth. Nevertheless, we find that the number of father-only families grew at more than double the rate of mother-only families during the 1980s. Decomposition analyses show that the largest factor associated with the increase is that fathers now head a greater proportion of all formerly married single-parent families with children. Although the share of single-parent families headed by fathers is larger in 1990 than in 1980 even after controlling for cohabitation, it is smaller than in 1970.     

Counselors' Perceived Person–Environment Fit and Career Satisfaction

This correlational study examined the relationship between career satisfaction and person–organization, demands–abilities, and needs–supplies fit with counselors (N= 464) using the Perceived Job Fit instrument ( Cable & DeRue, 2002 ) and a scale of career satisfaction adapted from the Adult Career Concerns Inventory ( Super, Thompson, Lindeman, Myers, & Jordaan, 1988 ). Using a linear, multiple regression analysis, the authors found that person–organization fit (p= .01) and needs–supplies fit (p= .00) were both positively related to career satisfaction and that there was no relationship between demands–abilities fit and career satisfaction.     

An Intersectional Analysis of LGBTQ Online Media Coverage of the Pulse Nightclub Shooting Victims

ABSTRACT

This study illustrates the radical potential of intersectionality to offer a more deeply critical analysis of hierarchies in lesbian, gay, bisexual, transgender, and queer (LGBTQ) communities. The author examines how 377 reports from the five most-trafficked LGBTQ Web sites represented victims of the Pulse nightclub shooting in Orlando, FL. Findings support previous scholarship that has emphasized Latinx exclusion, as the articles generally failed to present the victims in an intersectional way, focusing on their LGBTQ status and excluding their Latinx identities. At the same time, a significant minority of the reports emphasized Latinx queer people, most frequently in a way that continued to prioritize LGBTQ identification, sometimes even advancing stereotypical representations of Latinx communities as extraordinarily focused on faith, family, or “machismo.” Moreover, none of the articles considered xenophobia as a potential motivating factor in the shooting, and the reports typically presented policing agencies in a neutral, and sometimes even positive, way.     

A Simple New Algorithm for Quadratic Programming with Applications in Statistics

Problems involving estimation and inference under linear inequality constraints arise often in statistical modeling. In this article, we propose an algorithm to solve the quadratic programming problem of minimizing for positive definite Q, where is constrained to be in a closed polyhedral convex cone , and the m × n matrix is not necessarily full row rank. The three-step algorithm is intuitive and easy to code. Code is provided in the R programming language.     

On using percentiles to fit data by a johnson distribution

The well-known Johnson system of distributions was developed by N. L. Johnson (1949). Slifker and Shapiro (1980) presented a criterion for choosing a member from the three distributional classes (S_B,S_L, and S_v) in the Johnson system to fit a set of data. The criterion is based on the value of a quantile ratio which depends on a specified positive z value and the parameters of the distribution. In this paper, we present some properties of the quantile ratio for various distributions and for some selected z values. Some comments are made on using the criterion for selecting a Johnson distribution to fit empirical data.     

The Bivariate Normal Copula

We collect well-known and less-known facts about the bivariate normal distribution and translate them into copula language. In addition, we provide various (equivalent) expressions for the bivariate normal copula, we compute its Gini's gamma, and we derive improved bounds and approximations on its diagonal.     

Constrained penalized splines

The penalized spline is a popular method for function estimation when the assumption of “smoothness” is valid. In this paper, methods for estimation and inference are proposed using penalized splines under additional constraints of shape, such as monotonicity or convexity. The constrained penalized spline estimator is shown to have the same convergence rates as the corresponding unconstrained penalized spline, although in practice the squared error loss is typically smaller for the constrained versions. The penalty parameter may be chosen with generalized cross‐validation, which also provides a method for determining if the shape restrictions hold. The method is not a formal hypothesis test, but is shown to have nice large‐sample properties, and simulations show that it compares well with existing tests for monotonicity. Extensions to the partial linear model, the generalized regression model, and the varying coefficient model are given, and examples demonstrate the utility of the methods. The Canadian Journal of Statistics 40: 190–206; 2012 © 2012 Statistical Society of Canada     

Individual- and Contextual-Level Factors Affecting the Use of Social Support Services among Older Adults

ABSTRACT

By 2060, the number of Americans aged 65 and older is expected to more than double, while the number of Americans aged 85 and older is expected to nearly triple. As the nation's aging population grows, older adults will need to rely on social support services, such as transportation and housing services, in order to remain active and lead independent lives. In this study we use data collected from the elderly supplement of the Southeastern Pennsylvania Household Health Survey (SPHHS) (n = 3,042) to explore the relationship between the availability of elderly specific social service providers and utilization of social support services among older adults. We find that while the number of elderly specific social service providers can increase use of social support services among older adults, its impact is relatively minimal. We find that individual factors, instead, are stronger predictors of service use. This is a finding that should be particularly encouraging for elder care providers who may not have the resources needed to undertake large structural changes (like building new facilities). Still, future research should explore how the availability of a broader range of elderly specific social services (than explored in this study) impacts use.