Measurement of cumulative physiological dysregulation in an older population

The allostatic load framework postulates that an important pathway connecting the social environment with health involves biological responses to stressful stimuli and the subsequent dysregulation of interrelated physiological systems. We formulate a new measure for cumulative physiological dysregulation using a grade of membership model estimated with biodemographic data from a national sample of older Taiwanese persons. We investigate associations between the measure and physical, psychological, and cognitive function. The results provide insights into the relationships between a set of biological profiles and various health outcomes, identify limitations of earlier approaches, and underscore next steps in the development of improved for mulations of physiological dysregulation.     

Gender Differences in Adult Children's Support of Their Parents in Taiwan

This paper examines the patterns and determinants of four types of support provided by adult children to their parents, with particular attention to differences in the helping behaviors of sons and daughters. The data come from the 1989 wave of the Survey of Health and Living Status of the Elderly in Taiwan. The analysis is based on 12,166 adult children from 2,527 families. We find that usually only one child in a family provides help with activities of daily living (ADLs) or instrumental activities of daily living (IADLs), but for financial or material support the responsibility is likely to be shared among siblings. Sons generally carry the major responsibility for taking care of their older parents, and daughters fulfill the son's roles when sons are not available.     

Binge drinking and alcohol-related problems among community college students: implications for prevention policy

Binge drinking and alcohol-related problems among students at traditional 4-year universities have been well documented. However, little is known about the frequency of their such behaviors and its consequences among community college students, who comprise roughly 44% of all undergraduate students in the United States. The present study examined binge drinking and alcohol-related problems in 762 (61% female) ethnically diverse (65% Caucasian, 20% Hispanic, 9% African American) community college students (mean age = 26.23, SD = 7.81). Based on gender-specific criteria, 25% engaged in binge drinking. As compared to nonbingers and current abstainers, bingers had higher rates of drinking-related problems. The implications of these findings for research and for prevention/intervention programs are discussed.     

Measuring fertility norms

We argue that social norms must be measured at the group level of analysis, allow for a range of acceptable behaviors, and be linked to the individual level of analysis to explain social behavior. From a survey of young adults in Wisconsin (1973), we generated measures of family size norms from sibship experience and friends' expected family size. These measures satisfied our primary criterion for a social norm: Those with non-normative family size desires tended to shift expectations toward the norm. The analyses demonstrate the difficulty of estimating normative effects when by its very definition a norm is expected to restrict variation in human behavior.Revision of a paper presented at the annual meetings of the American Sociological Association, New York, New York, August 30–September 3, 1986. This research was supported by Grant 1-R01-HD-17190 and by Center Grant HD05876 from the Center for Population Research, NICHHD. Paula Goldman's work was supported by Training Grant 5732HD07014 from the same source.     

Changes in widowhood and divorce and expected durations of marriage

A new interpretation of mathematical formulas developed by Keyfitz illustrates how the concept of entropy (H) can be applied to the analysis of marriage dissolution. The quantities H(divorce) and H(widowhood) indicate the changes in marriage duration which would result from small, constant changes in duration-specific divorce and widowhood rates, respectively. An examination of values for the United States, Nepal and Colombia illustrates the utility of H(i) in assessing the impact of changes in widowhood and divorce and clarifies the relationship between H and changes in life expectancy.     

Lost in transition: Illicit substance use and services receipt among at-risk youth in the child welfare system

This study examined the use of mental health and substance abuse services among adolescents in the child welfare system (CWS) who reported use of illicit substances. 1004 adolescents age 11–15 years at baseline were followed for 5–7 years, over five waves of data collection. Shortly after the investigation for maltreatment (baseline), 69.1% of youths using illicit substances received mental health and/or substance abuse outpatient specialty services. By the last follow-up, during the transition to adulthood, only 21.5% of young adults using illicit substances received outpatient specialty services. Youth who used illicit substances were more likely to receive outpatient and inpatient specialty services than non-users at the time of contact with the CWS (mostly baseline), but this difference faded over the follow-up period. By 5–7 years follow-up, there was no significant difference in specialty services receipt for illicit substances users versus non-users. Predictors of outpatient service use at most waves were having Medicaid, mental health needs, and having recently seen a school counselor or primary care physician. Among illicit substance users transitioning to adulthood, African American youths were less likely to receive outpatient specialty services than White youths. These findings reveal a need for more attention to illicit substances use among youth in the CWS, better cross agency integration, and special attention to the needs of transition-age youth to better connect them with services as they age out of the CWS.     

Uncertainties in the Link Between Global Climate Change and Predicted Health Risks from Pollution: Hexachlorobenzene (HCB) Case Study Using a Fugacity Model

Industrial societies have altered the earth's environment in ways that could have important, long-term ecological, economic, and health implications. In this paper, we examine the extent to which uncertainty about global climate change could impact the precision of predictions of secondary outcomes such as health impacts of pollution. Using a model that links global climate change with predictions of chemical exposure and human health risk in the Western region of the United States of America (U.S.), we define parameter variabilities and uncertainties and we characterize the resulting outcome variance. As a case study, we consider the public health consequences from releases of hexachlorobenzene (HCB), a ubiquitous multimedia pollutant. By constructing a matrix that links global environmental change both directly and indirectly to potential human-health effects attributable to HCB released into air, soil, and water, we define critical parameter variances in the health risk estimation process. We employ a combined uncertainty/sensitivity analysis to investigate how HCB releases are affected by increasing atmospheric temperature and the accompanying climate alterations that are anticipated. We examine how such uncertainty impacts both the expected magnitude and calculational precision of potential human exposures and health effects. This assessment reveals that uncertain temperature increases of up to 5°C have little impact on either the magnitude or precision of the public-health consequences estimated under existing climate variations for HCB released into air and water in the Western region of the U.S.     

The Onset of Working Memory in Infants

We used an optimized configuration of the delayed‐response task to explore the ability of young infants to remember which of 2 locations was correct across 12 trials after a 1‐ to 2‐sec delay. Performance improved with age, particularly after 5.5 months. These findings suggest an onset of appreciable working memory for many infants in the middle of their 6th month.     

Calculation of life tables from survey data: A technical note

Life table calculations from survey data are frequently based on events for which exact dates are not available. When these dates are coded in monthly form (e.g., century months), estimates should take into account the fact that the first duration interval—the interval which captures events occurring in the first month of exposure—is half the length of all remaining intervals. Although failure to do so has a trivial effect on many demographic calculations, estimates which are based on events which occur with high frequency in the first few months of exposure can be substantially biased. Estimates offecundability for four countries in the World Fertility Survey are used to illustrate this bias.