Relations between physical activity and behavioral and perceptual correlates among midwestern college students

OBJECTIVE: Given the inconsistent findings in the literature, the authors' purpose in this study was to examine the associations between physical activity and behavioral and perceptional correlates, such as binge drinking, cigarette smoking, fruit or vegetable consumption, and weight perceptions, among midwestern college students. PARTICIPANTS AND METHODS: The authors invited a convenience sample of 1,200 undergraduate college students enrolled in the 2004-2005 academic year in 4 different midwestern universities to participate in a survey. Of the 1,163 students who participated in the survey, a total of 1,134 usable surveys were received (response rate of 94.5%). RESULTS: Hierarchical multiple logistic regression analyses indicated that smoking, perceived weight, and consumption of fruit were independent predictors of physical activity when controlling for other variables. CONCLUSIONS: Physical activity promotion requires tailored approaches that are dependent on the target segment of the college student populations.     

Education,race/ethnicity and out-migration from a border city

Through a combination of high immigration rates and differential fertility, communities along the U.S.-Mexico border have become overwhelmingly Hispanic. El Paso, Texas, located across the border from Ciudad Juárez, forms part of the world’s largest urban center on a land border. El Paso ranks among the bottom 10 large U.S. metropolitan areas with the smallest proportion of college-educated adults, causing concerns among policy makers regarding its prospects for economic development. Local discourse suggests that low educational levels result from the out-migration of educated groups that find higher wages or better jobs elsewhere. Two sources of data are used to explore the association between education, race/ethnicity, and out-migration: the five percent 2000 PUMS and a survey conducted among students at the University of Texas at El Paso. We find that between 1995 and 2000 a large net outflow of non-Hispanic whites and blacks of all educational levels took place. Among Mexicans and Mexican Americans, college graduates were more likely to leave compared to high school graduates, but place of birth and language preference influenced these odds. Student data confirmed that non-Hispanics are significantly more likely to plan to leave compared to students of Mexican origin or descent. Among Mexicans and Mexican Americans, those who prefer English and mentioned jobs and lifestyle as the most important factors in choosing a place to live and work were more likely to have plans to leave upon graduation. Policy implications are discussed regarding the future of border communities.     

Reducing Hospital Readmissions by Integrating Empirical Prediction with Resource Optimization

Hospital readmissions present an increasingly important challenge for health‐care organizations. Readmissions are expensive and often unnecessary, putting patients at risk and costing $15 billion annually in the United States alone. Currently, 17% of Medicare patients are readmitted to a hospital within 30 days of initial discharge with readmissions typically being more expensive than the original visit to the hospital. Recent legislation penalizes organizations with a high readmission rate. The medical literature conjectures that many readmissions can be avoided or mitigated by post‐discharge monitoring. To develop a good monitoring plan it is critical to anticipate the timing of a potential readmission and to effectively monitor the patient for readmission causing conditions based on that knowledge. This research develops new methods to empirically generate an individualized estimate of the time to readmission density function and then uses this density to optimize a post‐discharge monitoring schedule and staffing plan to support monitoring needs. Our approach integrates classical prediction models with machine learning and transfer learning to develop an empirical density that is personalized to each patient. We then transform an intractable monitoring plan optimization with stochastic discharges and health state evolution based on delay‐time models into a weakly coupled network flow model with tractable subproblems after applying a new pruning method that leverages the problem structure. Using this multi‐methodologic approach on two large inpatient datasets, we show that optimal readmission prediction and monitoring plans can identify and mitigate 40–70% of readmissions before they generate an emergency readmission.     

An investigation of racial and ethnic disparities in birth weight in Chicago neighborhoods

We examine differences in the mean birth weights of infants born to non-Hispanic black, non-Hispanic white, and Mexican-origin Hispanic mothers (of any race) in Chicago in 1990 using linear regression models with neighborhood fixed effects. Our pooled models accounted for 64% of the black-white difference and 57% of the black/Mexican-origin Hispanic difference. Differences in the relationship between measured characteristics and birth weight accounted for around half the birth-weight gap between non-Hispanic black and other infants. Efforts to close this gap must go beyond programs that aim to reduce the level of risk factors among black women to address the causes of differences in the effects of risk factors.     

Tolerated,threatening and celebrated: How Canadian news media frames temporary migrant workers

Immigration scholars have long observed that migrant workers are paradoxically both welcomed and deemed threatening within the nation state. In this paper, we investigate the extent to which mainstream media outlets reinforce these perceptions. Using critical discourse analysis, we analysed 561 articles in three mainstream newspapers to ascertain the various discourses used to describe migrant workers and migrant work. Our analysis specifically found that a cluster of ‘hiring scandals’ led to an increase in coverage on migrant work, and affected the types of discourses used in reference to migrant workers. Prior to these scandals, migrant work generated minimal media coverage. Ultimately, we find that migrant workers are deemed tolerable to the nation-state at certain time periods, deemed as threats in other time periods, and, in the current moment of the global health crisis, are deemed absolutely essential. Migrant workers are thus only 'conditionally included' in the state.     

Mobility at the margins: The facilitating and risk-reducing role of clustered migration in migration for begging between Romania and Norway

This article describes the social and economic organization of migration for begging from Romania to Norway. Drawing on a survey among homeless Romanians in Oslo and qualitative interviews conducted in Norway and migrant-sending communities in Romania, we describe how migrants gain access to resources such as information, transport, places to beg and places to sleep, as well as social and emotional support when abroad. We argue that the particular, clustered structure of these migration flows makes migration available to persons who otherwise would not have opportunities to migrate, eases their adaptation in cities of destination and serves to protect the migrants from exploitation and abuse from external actors. This migration structure does, however, reflect a strong dependence on kinship networks, which may create vulnerabilities in itself.     

Planning Forward by Looking Backward: Retrospective Thinking in Strategic Decision Making*

Retrospective thinking occurs whenever one remembers something from the past, but one can also think retrospectively about hypothetical future events, by imagining that the event has already transpired and then working backward in the mind from the future toward the present. Designers, artists, planners, and other creative individuals utilize retrospective thinking when they mentally envision the object they wish to create and then thinkabout how it might be constructed. Some theorists and some previous research have suggested that forward and backward thinking are different cognitive processes, but there has been little investigation on the nature of these differences. This article examines the literature and describes a laboratory study designed to investigate retrospective thinking as a technique for increased idea generation. Subjects (n=64) were professional planners and managers with an average business experience of over 20 years. In a planning task, significantly more ideas were generated in the retrospective thinking mode than in the prospective mode, but the ideas were not found to be of greater quality. Evidence emerged that a subset of subjects were better able to make use of the retrospective technique, suggesting that selection along with training may be appropriate for the technique's mosteffective use.     

Prediction of sports injuries in football: a recurrent time-to-event approach using regularized Cox models

AStA Advances in Statistical Analysis - Data-based methods and statistical models are given special attention to the study of sports injuries to gain in-depth understanding of its risk factors and...