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871.
Margaret Harris 《Social Policy & Administration》1990,24(2):156-167
The voluntary sector is an increasingly important component of our system of welfare provision. This paper focuses on voluntary leaders of welfare agencies in the voluntary sector; the chairpersons of governing bodies. It draws on a study carried out in an outer metropolitan borough with a socially mixed population. The characteristics of chairpersons and the background to their involvement are described. It appears that most are drawn in to their agencies and in to the role of chairperson more by chance than through positive commitment to a cause, but that, once in post, they rise rapidly to the challenge. Leadership of the local voluntary sector is found to be part of a wider commitment to community benefit and to collective provision of welfare. Some implications of the findings for the development of voluntary sector welfare agencies and for social policy are discussed. 相似文献
872.
873.
874.
When an existing risk prediction model is not sufficiently predictive, additional variables are sought for inclusion in the model. This paper addresses study designs to evaluate the improvement in prediction performance that is gained by adding a new predictor to a risk prediction model. We consider studies that measure the new predictor in a case–control subset of the study cohort, a practice that is common in biomarker research. We ask if matching controls to cases in regards to baseline predictors improves efficiency. A variety of measures of prediction performance are studied. We find through simulation studies that matching improves the efficiency with which most measures are estimated, but can reduce efficiency for some. Efficiency gains are less when more controls per case are included in the study. A method that models the distribution of the new predictor in controls appears to improve estimation efficiency considerably. 相似文献
875.
Margaret E. Drolette 《The American statistician》2013,67(3):102-103
A simple procedure for establishing minimum sample size in X 2 goodness-of-fit tests is presented. Samples of this size will automatically satisfy Yarnold's criterion. 相似文献
876.
877.
A longitudinal report of 156 gay, lesbian, and bisexual youths examined changes in sexual identity over time. Fifty-seven percent of the youths remained consistently self-identified as gay/lesbian, 18% transited from bisexual to gay/lesbian, and 15% consistently identified as bisexual over time. Although youths who consistently identified as gay/lesbian did not differ from other youths on time since experiencing sexual developmental milestones, they reported current sexual orientation and sexual behaviors that were more same-sex centered and they scored higher on aspects of the identity integration process (e.g., more certain, comfortable, and accepting of their same-sex sexuality, more involved in gay-related social activities, more possessing of positive attitudes toward homosexuality, and more comfortable with others knowing about their sexuality) than youths who transited to a gay/lesbian identity and youths who consistently identified as bisexual. Contrary to the hypothesis that females are more sexually fluid than males, female youths were less likely to change identities than male youths. The finding that youths who transited to a gay/lesbian identity differed from consistently gay/lesbian youths suggests that identity integration continues after the adoption of a gay/lesbian sexual identity. 相似文献
878.
Alicia A. Taylor Joyce S. Tsuji Margaret E. McArdle William J. Adams William L. Goodfellow Jr. 《Risk analysis》2023,43(2):211-218
The U.S. Environmental Protection Agency's (EPA) Integrated Risk Information System (IRIS) database, the authoritative source of U.S. risk assessment toxicity factors, currently lacks an oral reference dose (RfD) for copper. In the absence of such a value, various health-based reference values for copper are available for use in risk assessment. We summarize the scientific bases and differences in assumptions among key reference values for ingested copper to guide selection of appropriate values for risk assessment. A comprehensive review of the scientific literature best supports the oral RfD of 0.04 mg/kg body weight/day derived by EPA from their Drinking Water Action Level. This value is based on acute gastrointestinal effects but is further supported by broader analysis of copper deficiency and toxicity. 相似文献
879.
Julia D. McQuade Rosanna Breaux Annah R. Cash Nicholas J. Horton Margaret A. Azu Daylin Delgado 《Social Development》2023,32(4):1374-1393
Although parent ratings, adolescent ratings, and observations are all utilized to measure parent emotion socialization during adolescence, there is a lack of research examining measurement differences and concordance. Thus, the present study compared three measures of parent supportive and nonsupportive emotion socialization and examined whether parent and adolescent emotion dysregulation differentially related to these measures or moderated concordance across measures. Participants were a community sample of 92 adolescent-parent dyads. Adolescents were 13–17 years-old (M = 15.5, SD = 1.1), 41 were female and 51 were male; 87% of parents identified as mothers. Observed emotion socialization was coded during a parent-adolescent conflict discussion task. The adolescent and parent also rated the parent's supportive and nonsupportive reactions to the adolescent's negative emotions; they each also rated their own emotion dysregulation. Due to data collection timing, COVID-19 family stress was also assessed and explored as a covariate in analyses. Bivariate correlations indicated that there were weak and non-significant correlations across emotion socialization measures. Multilevel models indicated that measures of parent emotion socialization were differentially associated with adolescent emotion dysregulation, with adolescent emotion dysregulation relating significantly to adolescent ratings, but not observations or parent ratings, of parent emotion socialization. In addition, multiple regressions indicated that there was less concordance across measures when parents were higher in emotion dysregulation. Results suggest that measurement may influence researchers’ conclusions about how youth adjustment relates to parent emotion socialization. Additionally, there may be even lower agreement across measures of parent emotion socialization when parents have emotional challenges. 相似文献
880.
Leander Kandilige Joseph Kofi Teye Mary Setrana Delali Margaret Badasu 《International migration (Geneva, Switzerland)》2023,61(4):240-256
Generic accounts of pervasive cases of exploitation and abuse against migrant domestic workers in the Middle East exist in the extant literature. However, very little is known about the breadth, depth and gendered nature of abuses experienced by female migrants from especially the sub-Saharan African region. Abuses of the rights of sub-Saharan Africans are under-represented and under-theorised. This paper interrogates the question what is the nature, extent and severity of exploitation and abuse against female Ghanaian domestic workers in the Middle East? Using data from mixed-methods research, this paper adopts the framework of structural, symbolic and interpersonal violence to examine the range of abuses against domestic workers and the context within which these abuses take place. 相似文献