Asymptotic variances for the multiplicative interaction model

When modelling two-way analysis of variance interactions by a multiplicative term-[Formula] asymptotic variances and covariances are derived for the parameters p, yi and Sj using maximum likelihood theory. The asymptotic framework is defined by a2/K where K is the number of observations per combination of the two factors and a2 the common variance of the eijk values. The results can be applied when K = 1. Two Monte Carlo studies were carried out to check the validity of the formulae for small values of 02/K and to assess their usefulness when replacing the unknown parameters by their estimations. The formulae fit well but the confidence regions produced are too narrow if the interaction term is small. The procedure is illustrated with two examples.     

The Adoptee's Journey

The subject of adoption has often been mired in wishful thinking and denial. Because of the secrecy in the system, adopted children have been forced to repress their need to know about their origins; many feel invisible because an essential part of them is unacknowledged by their adoptive parents and society. The purpose of this article is to help mental health and legal professionals, as well as those in the extended community, to see what is specific about the formation of the adoptee's inner world. It introduces the concept of cumulative adoption trauma and discusses the adoptee's need to dissociate feelings of loss, grief, and anger. The struggle to form a coherent sense of self may eventually lead to the adoptee's need to search out the birth parents in order to integrate the past and the present and move on into the future.     

Efficacy of a web-based, tailored, alcohol prevention/intervention program for college students: 3-month follow-up

This study presents the results of an efficacy evaluation of a web-based brief motivational alcohol prevention/intervention program called Michigan Prevention and Alcohol Safety for Students (M-PASS). Four on-line sessions providing individually-tailored feedback were delivered to first-year college students over 9 weeks. Non- and low-risk drinking participants received risk prevention, while high-risk drinking participants received a risk-reduction intervention. Both intervention and control groups were surveyed at baseline and at a 3-month follow-up. Analysis showed positive effects for both men and women on stage of change, drinking behavior, drinking motivation and attitudes, and use of risk-reduction strategies. These results provided evidence of efficacy and found that M-PASS had both intervention and prevention effects, making it unique among currently developed brief alcohol interventions for college students.     

Do high rates of OSCAR deficiencies prompt improved nursing facility processes and outcomes?

Recently, some researchers have argued that high state rates of Centers for Medicare and Medicaid Services (CMS) Online Survey, Certification and Reporting (OSCAR) nursing facility deficiencies indicate stringent enforcement, leaving the impression of better-quality care soon to follow; others maintain that the rank ordering of states' quality of nursing facility care remains fairly constant, resting on deep-seated state characteristics that change slowly, so that short-term improvement in poor-quality care is unlikely. The authors examine change in the process and outcome quality of states' Medicare nursing facility long-term care programs across 1999 to 2005, using linear and two-stage least squares regression. They find that (1) nationally, process quality generally falls across this period while outcome quality generally increases; (2) neither a prominent enforcement stringency index nor state culture, a relatively stable state characteristic, exerts much influence on state process and outcome quality scores over time, but (3) the relative costs and benefits for CMS compliance appear to contribute to explaining change in states' quality of resident outcomes over time; and (4) states' process quality is much less stable than outcome quality, and outcome indices distinct from OSCAR deficiency data provide more reliable and possibly more valid measures of care quality.     

Estimation of vital rates by means of monte carlo simulation

Monte Carlo simulation has been used to estimate age-specific fertility and mortality rates for a small population,the French-derived isolate of Northside on St. Thomas, U. S. Virgin Islands. Estimates were based on data collected in a household census and genealogical survey and on birth, death, and marriage records for the years 1916to 1966. During this 50-year period (in which the population size increased from 202 to 657), the numbers of births and deaths were too, small to estimate age-specific rates directly, and in addition, death registration was incomplete. Mortality rates were estimated using a simulation program in which mortality was the only stochastic variable. A model mortality schedule was chosen which most accurately reproduced the growth pattern of the population over the 50-year period. To estimate fertility rates, a more complex simulation model was used in which fertility, nuptiality, and mortality were random variables with probability distributions. Preliminary estimates of fertility were made from the birth records and used as input to this simulation program. Birth probabilities were adjusted empirically from one set of simulation runs to the next, until population growth rates, as well as other demographic characteristics, were similar in the real and simulated populations. The birth rates which produced the best fit to the real population data were taken as the estimated age-specific fertility schedule. To reproduce the real population age structure more closely, secular changes in birth probabilities were applied.     

Young People and Political Involvement in Northern Ireland

This article reports some of the findings from the Pathways study which traced influences on the developmental pathways of adolescents and young adults in Belfast (Northern Ireland) and in Dublin (Republic of Ireland). Sample size was 130 aged 27 (66 male, 74 female) and 311 aged 17 (142 male, 169 female) most of whom had participated in earlier waves of the project at age 12. The study explored relationships between the participants' actual or intended involvement in politics and other factors, including family support, educational and occupational level, religious practice, and experience of the Troubles. The study concludes by looking at the relationship between these variables over time using a life-course approach within the socio-ecological model.     

Health and medical services use: a matched case comparison between CCRC residents and national health and retirement study samples

Little is known about the health status of adults living in continuing care retirement communities (CCRC). Using matched-case control, 458 adults from the Health and Retirement Study (HRS) or a CCRC-based sample were compared on total comorbidity, self-rated health, home health services use, and hospitalizations. At year 2, the CCRC sample reported more comorbidities (96%) but significantly better self-rated health (96% good/excellent) than the HRS sample (93% comorbidity, 73% good/excellent; p < .01). There were no significant differences in frequency of home health use or hospitalization. Living in a CCRC appears to be associated with higher self-ratings of health in this sample.