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321.
Rovira Joan Viscusi W. Kip Antoñanzas Fernando Costa Joan Hart Warren Carvalho Irineu 《Journal of Risk and Uncertainty》2000,21(2-3):187-212
Previous studies of smoking risk beliefs have focused almost exclusively on risks to the smoker. Using an original set of survey data from Spain, we examine the public's perceived risks from exposures to environmental tobacco smoke. The risk categories considered included lung cancer, heart disease, life expectancy loss, and low birth weight for children of smoking mothers. Risk beliefs were quite high, often dwarfing scientific estimates of the risk. The results are consistent with overestimation of risks from highly publicized, low probability events. 相似文献
322.
Maria-Teresa Bosch-Badia Joan Montllor-Serrats Maria-Antonia Tarrazon-Rodon 《Review of Managerial Science》2017,11(4):789-814
This paper is centred on the analysis of the information embedded in the optimal weights of the assets in the CAPM and the Bamberg–Dorfleitner model. On this basis, first we find a functional relationship between the optimal weights of both models. Next, we find a set of performance indicators that express the contribution of each asset to the reward/volatility ratio measured as the Sharpe ratio or through a utility function. For the Bamberg–Dorfleitner model these indicators also lead to identify the contribution of each independent variable to the reward/volatility ratio. Technically, these connections are obtained through the covariance-normalized portfolio that consists of a transformation of the inverted covariance matrix. The additive property of covariances is transmitted to the indicators. These results enable investors and portfolio managers to obtain a precise knowledge of the causes of the value of the reward/volatility ratio. From the corporate point of view, this approach contributes to a better identification of the features of the different types of investors to whom to focus the corporate financial policy. 相似文献
323.
Lifetime Data Analysis - Understanding the distribution of an event duration time is essential in many studies. The exact time to the event is often unavailable, and thus so is the full event... 相似文献
324.
This paper focuses on financial strain across the life course as a condition underlying health inequalities observed in later life. The analysis is based on data from 1167 adults 65 years and older collected as part of the 'Aging, Stress and Health Study". Relying on retrospective data about hardship experienced over the life course, we find that long-term financial hardship is reflected in a range of health outcomes at late life, even after controlling for the effects of current financial circumstances. Moreover, the sheer persistence of hardship matters more than its episodic occurrence or timing, so that the health effects of early hardship may be obviated if followed by no further hardship. This pattern offindings is consistent with the notion of allostatic load, the cumulative damage done to health and well-being under the burden of an unrelenting stressor in a critically important life domain. 相似文献
325.
Folse VN Eich KN Hall AM Ruppman JB 《Journal of psychosocial nursing and mental health services》2006,44(3):22-29
The investigators conducted a pilot study to detect suicide risk in adolescents and adults seeking treatment in an emergency department, as well as to test the reliability and validity of the 4-item Risk of Suicide Questionnaire (RSQ). This study expanded the implementation of the RSQ beyond its initial use with children and adolescents with psychiatric symptoms who were seeking treatment in a pediatric emergency department to include adolescent and adult patients in a Level I trauma center. An advanced practice psychiatric nurse verbally administered the RSQ to a convenience sample of 104 emergency department patients ages 12 to 82. Psychometric analysis demonstrated an adequate degree of reliability and criterion-related validity for the RSQ. Approximately 30% of all patients who participated screened positive for suicide risk. The results support the continued use of the 4-item RSQ with all adolescents and use of a reduced 2-item form of the RSQ with adults exhibiting psychiatric chief complaints to determine imminent risk of suicide in patients who seek treatment in the emergency department. Nurses in all health care settings need to initiate suicide screening and implement nursing interventions directed toward suicide prevention. 相似文献
326.
Albert Esteve Joan García‐Román Iñaki Permanyer 《Population and development review》2012,38(3):535-546
Newly released census microdata reveal the nearly worldwide and substantial decline in educational hypergamy (women marrying men with higher educational attainment) across 56 countries from the 1970s to the 2000s. We examine the extent to which the observed decrease in hypergamy is connected to the worldwide rise in female educational attainment. Our results show that educational hypergamy is an enduring form of gender inequality in union formation across the countries examined but that it has been decreasing over the last few decades and in some countries has reversed in recent years. Overall, we find a strong association between hypergamy and gender differences in educational attainment. Societies in which the female educational advantage is greater tend to have lower levels of educational hypergamy. There is a tendency toward a joint increase in women's educational levels and a decrease in educational hypergamy. This article underlines the influence of women's educational opportunities on the increase in gender symmetry in assortative mating, which leads us to predict the end of educational hypergamy. 相似文献
327.
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329.
This article explores Bayesian joint models of event times and longitudinal measures with an attempt to overcome departures from normality of the longitudinal response, measurement errors, and shortages of confidence in specifying a parametric time-to-event model. We allow the longitudinal response to have a skew distribution in the presence of measurement errors, and assume the time-to-event variable to have a nonparametric prior distribution. Posterior distributions of the parameters are attained simultaneously for inference based on Bayesian approach. An example from a recent AIDS clinical trial illustrates the methodology by jointly modeling the viral dynamics and the time to decrease in CD4/CD8 ratio in the presence of CD4 counts with measurement errors to compare potential models with various scenarios and different distribution specifications. The analysis outcome indicates that the time-varying CD4 covariate is closely related to the first-phase viral decay rate, but the time to CD4/CD8 decrease is not highly associated with either the two viral decay rates or the CD4 changing rate over time. These findings may provide some quantitative guidance to better understand the relationship of the virological and immunological responses to antiretroviral treatments. 相似文献
330.
Starting from two known continuous univariate distributions, a bivariate distribution is constructed depending on a parameter which measures the degree of stochastic dependence between the two random variables. From the foregoing construction we then pass to a multivariate-type distribution, constructed using only univariate distributions and an association matrix. Some properties of the multivariate and bivariate case are studied. 相似文献