The effects of back belts and load on selected lifting kinematics during a simulated patient transfer

This study used two dimensional biomechanical analysis to examine the effects of back belts and lifting load on selected lifting kinematics during a simulated patient transfer. A human manikin placed in a sitting position was attached to a customized lifting apparatus which controlled the lifting load and direction of the manikin. Eighteen female participants, between the age of 21 and 27, completed six lifts (sit to stand transfers) of the manikin. Three lifts were completed at the 30 lb load condition (no belt, belt 1 and belt 2) and three lifts were completed at the 50 lb load condition (no belt, belt 1 and belt 2). A doubly two way ANOVA found a significant main effect for the belt condition, F(12,6)=10.06, P=0.002. There was no significant effect for load and no interaction existed between belt and load. The results revealed a significant decrease in trunk flexion when participants wore the wider (nine inch) belt during the 30~lb lifts when compared to the no belt trials. No significant differences were found in trunk flexion means with the narrower width (six inch) belt. No significant differences were found in trunk spinal flexion with either belt condition during the 50 lb lifts. There were no significant differences found in either of the belts in the means of lifting time, knee flexion, elbow flexion, forward displacement of the lifter's center of mass, and the lifter's maximum center of mass velocity. The results suggest that wider back belts may be more effective at reducing spinal flexion during patient lifting under moderate load conditions when compared to narrower back belts and to no-belted controls.     

Specific relationships between psychosocial job conditions and job-related stress: A three-level analytic approach

This cross-sectional questionnaire study presents a multi-level analysis on 2565 workers in 188 departments in 36 organizations in the Netherlands. A three-level model is used in which individual workers are nested within departments, which in turn are nested within organizations. Research questions concern (1) the amount and distribution of variance in job-related stress explained for the three levels in the study (individuals, departments, organizations), and (2) the specificity of relationships between psychosocial job demands and job-related stress in the three-level model. Well-being showed slightly more raw variance to be explained at supra-individual levels than strain. The full regression model explained about 35% of the total variance in both work-related strain and well-being. Psychosocial job conditions did not exceed the expected amount of 10 to 15% contribution to this explained variance. These results do not differ from comparable studies that do not use multi-level analysis. The variance distribution in the full model, however, showed unexplained variance to be located at the individual level for both strain and well-being, and at the departmental level only for well-being. This last finding shows a direction for possible improvement of work stress models. Specificity of relationships was also shown: psychological job demands were more strongly related to strain, whereas job content variables (i.e. job variety, job control) were more strongly related to well-being. Results also suggested that social support was more strongly associated with well-being than with strain. Well-being appeared to have a more widely varying range of predictors than strain.     

Family Therapy with Substance Abusers: Legal Considerations Regarding Confidentiality*

This paper explores various problems in the area of confidentiality often confronted by family therapists working with substance abusers. The scope and intent of the Federal Regulations controlling the release of all alcohol and drug abuse patient records and information are examined. Also, the rules regarding the release of confidential information by family therapists to attorneys, other family members and third-party funding sources are explained. Suggestions regarding the release of information in questionable cases are made. Finally, the growing use of family therapy in treating substance abusers, and its impact on confidentiality law and policy, is noted.     

Unearthing Loci that influence life span

It is known that certain hormones are involved in determining longevity (for example, insulin and insulin-like growth factor). Results presented in a paper published in this week's issue of Science allow us to add steroid hormones to this list. Anne Simon and colleagues show for the first time that a sterol hormone--ecdysone of the fly Drosophila melanogaster--regulates life span. In this Perspective, I discuss the implications of this result in the context of gene regulation and mechanisms of aging.     

The impossibility of a Paretian egalitarian

In a one-good world, there is a nice correspondence between the Pigou-Dalton principle of transfer and social welfare dominance. In this paper we study the case of multiple goods (without using prices as a means to come back to one dimension), and show that many results of the one-dimensional setting carry over to the multidimensional case when individuals are assumed to have identical preferences. But the nice correspondence breaks down as soon as individual preferences display minimal differences, and multidimensional versions of the transfer principle clash with the Pareto principle. This analysis reveals an interesting connection with the theory of fair allocation, since multidimensional transfer principles are closely related to the no-domination criterion, a weak version of the no-envy criterion.For helpful comments, we thank J. L. Castillo, M. Le Breton, Y. Sprumont, K. Suzumura and participants at a workshop in Osnabrück, a LivinTax conference in Bordeaux and a seminar in Hitotsubashi University, as well as two referees. Financial support from TMR project Living Standards, Inequality and Taxation Contract no ERBFMXCT 980248 of the European Commission is gratefully acknowledged. We thank Michel Le Breton for giving us the permission to state a result contained in his unpublished Ph D thesis.     

Attendance at religious services and mortality in a national sample

Research and theory increasingly suggest that attendance at religious services is protective against premature mortality. However, prior studies are limited and do not extensively explore potential explanations for the relationship, especially in terms of religious beliefs and behaviors associated with service attendance. This study estimates the impact of service attendance on mortality in a national probability sample and provides the most extensive empirical examination of potential explanations. Individuals who report attending religious services once a month or more (just over 50 percent of the population) have a 30-35 percent reduced risk of death over a 7.5 year follow-up period after adjusting for potential confounding factors. Consistent with prior research, 20-30 percent of this effect may be explained by better health behaviors (especially physical activity) among regular service attendees. Surprisingly, other religious beliefs and behaviors do not explain, and often tend to suppress, the association between service attendance and mortality.     

On the informational basis of social choice

The notion of informational basis in social choice can be broadened so as to cover not only the standard notions related to interpersonal utility comparisons, but also information about utilities or preferences at (ir)relevant alternatives, non-utility features of alternatives, personal responsibility, unconcerned subpopulations, and feasibility constraints. This paper proposes a unified conceptual framework for all these notions, and analyzes the kind of information retained in each case. This new framework yields a deeper understanding of the difficulties and possibilities of social choice. New welfarism theorems are also obtained.I am indebted to W. Bossert, W. Gaertner, F. Gaspart, L. Gevers, N. Gravel, S. Kolm, M. Le Breton, Ph. Mongin, P. Hammond, K. Suzumura, K. Tadenuma, A. Trannoy and J. Weymark for many conversations on topics related to this paper. I have benefited from reactions of the audience at the conference in honor of Louis Gevers, Namur 1999, and at a seminar at the LSE, and from comments by two referees and the editor, F. Maniquet. None of them is responsible for the shortcomings of the paper.     

Children with problematic sexualized behaviors in the child welfare system

This study assessed the utility of the Child Sexual Behavior Inventory (CSBI) in a child welfare sample. In this study, 97 children from ages 10 to 12 from either foster boarding homes or a residential treatment center participated. Researchers interviewed foster parents or primary therapists about children's sexual behavior, traumatic events, clinical symptoms, and their attitudes toward the child. Findings revealed that problematic sexualized behaviors were more prevalent in the residential treatment center (RTC) sample than they were in a normative sample. The pattern of associations between sexual behavior problems, traumatic events, and clinical syndromes in both the RTC and the foster boarding home (FBH) samples was similar to what has been found in samples in which biological custodial parents were the respondents. Analyses comparing youth who met the criterion for having problematic sexualized behaviors and youth who did not meet the criterion revealed that the two groups differed on clinical symptoms, prior traumatic events, and negative reports by caregivers. Results confirm the utility of the CSBI measure for this population and highlight several important clinical and programmatic concerns for addressing problematic sexual behavior in children in the child welfare system.     

How does the stork delegate work? Childbearing and the gender division of paid and unpaid labour

I estimate the relationship between fertility and the allocation of paid and unpaid labour among couples, accounting for the potentially endogenous nature of fertility with two instruments. Additional children lead to a reduction in paid hours and to an even larger increase in unpaid hours among mothers. An increase in fertility also leads to a decline in the proportion of mothers working and of mothers working full-time in paid employment. In contrast, additional children are not related to paternal paid hours, although there is evidence of a small increase in unpaid hours spent on childcare.