Distribution of Exposure Concentrations and Doses for Constituents of Environmental Tobacco Smoke

The ultimate goal of the research reported in this series of three articles is to derive distributions of doses of selected environmental tobacco smoke (ETS)-related chemicals for nonsmoking workers. This analysis uses data from the 16-City Study collected with personal monitors over the course of one workday in workplaces where smoking occurred. In this article, we describe distributions of ETS chemical concentrations and the characteristics of those distributions (e.g., whether the distribution was log normal for a given constituent) for the workplace exposure. Next, we present population parameters relevant for estimating dose distributions and the methods used for estimating those dose distributions. Finally, we derive distributions of doses of selected ETS-related constituents obtained in the workplace for people in smoking work environments. Estimating dose distributions provided information beyond the usual point estimate of dose and showed that the preponderance of individuals exposed to ETS in the workplace were exposed at the low end of the dose distribution curve. The results of this analysis include estimations of hourly maxima and time-weighted average (TWA) doses of nicotine from workplace exposures to ETS (extrapolated from 1 day to 1 week) and doses derived from modeled lung burdens of ultraviolet-absorbing particulate matter (UVPM) and solanesol resulting from workplace exposures to ETS (extrapolated from 1 day to 1 year).     

Treatment of incarcerated, sexually-abused adolescent females: an outcome study

This study examined the psychosocial functioning of 100 adolescent females (ages 12-17) sentenced to secure care in a southeastern state and the impact of gender-specific, cognitive-behavioral therapy (CBT) intervention on the psychosocial functioning of subjects who reported a history of sexual abuse. The Multidimensional Adolescent Assessment Scale (MAAS) was used to assess psychosocial functioning. Pre-test scores on the MAAS revealed significantly higher scores on 12 of 16 dimensions of psychosocial functioning and higher rates of serious criminal behavior for youth who subsequently disclosed sexual abuse histories as compared to those without such histories. At post-test, statistically significant improvements in psychosocial functioning were observed on 14 of 16 MAAS subscales for those who received the CBT intervention. Thus, incarcerated female adolescents who reported a history of sexual abuse demonstrated more impairment in their functioning as compared to those without a reported history of sexual abuse and responded positively to gender-specific, CBT-based intervention.     

输了面子赢了人心

工作中我愿意接触那些机智、有启发性、工作努力及诚实的人。我会与竞争对手或客户做朋友,唯一的原则就是“工作第一,友谊第二”。     

Mums,Dummies and ‘Dirty Dids’: The Dummy as a Symbolic Representation of Mothering?

The bio medical expert literature, although contested, associates the use of dummies, soothers or pacifiers, with illness, dental malformation, impaired speech and language, and working‐class mothering. This article suggests this negative perspective has filtered, via experts and the media, into public narratives of ‘good’ mothering. Interviews with 20 disadvantaged mothers demonstrate the complex negotiations undertaken to integrate dummy use into their personal ‘good‐mothering’ narratives. Representing their hitherto ignored voices in the dummy debate allows a consideration of the context of, and influences on, dummy use. The article argues that rather than a symbol of inadequate working‐class mothering, dummy use is a complex, highly negotiated, situated mothering practice.     

Sibling Relationships and Social-emotional Adjustment in Different Family Contexts

The aims of this study were to examine family type (nonstep, stepfather, stepmother, and single mother) and sibling type (full‐ and half‐siblings) differences in sibling relationship quality (positivity and negativity), and to investigate links between sibling relationship quality and child externalizing and internalizing problems. The sample included 192 families with a 5‐year‐old target child and an older sibling. In addition, 80 of these families included a third older child. Mothers and the older siblings (8 years and older) completed questionnaires and interviews regarding conflict and support in their sibling relationships, and parents and teachers reported on each child's social‐emotional adjustment. Sibling negativity (conflict, aggression) was highest in single‐mother families and full‐siblings were more negative than half‐ and stepsiblings. There was some evidence that sibling antagonism was associated with more child behavioral and emotional problems, but these effects were moderated by family type.     

Copula‐based semiparametric analysis for time series data with detection limits

The analysis of time series data with detection limits is challenging due to the high‐dimensional integral involved in the likelihood. Existing methods are either computationally demanding or rely on restrictive parametric distributional assumptions. We propose a semiparametric approach, where the temporal dependence is captured by parametric copula, while the marginal distribution is estimated non‐parametrically. Utilizing the properties of copulas, we develop a new copula‐based sequential sampling algorithm, which provides a convenient way to calculate the censored likelihood. Even without full parametric distributional assumptions, the proposed method still allows us to efficiently compute the conditional quantiles of the censored response at a future time point, and thus construct both point and interval predictions. We establish the asymptotic properties of the proposed pseudo maximum likelihood estimator, and demonstrate through simulation and the analysis of a water quality data that the proposed method is more flexible and leads to more accurate predictions than Gaussian‐based methods for non‐normal data. The Canadian Journal of Statistics 47: 438–454; 2019 © 2019 Statistical Society of Canada     

A Randomized Controlled Trial of a Financial Literacy Curriculum for Survivors of Intimate Partner Violence

Financial literacy programs are quickly gaining in popularity around the globe. A relatively new target group is survivors of intimate partner violence (IPV), an economically vulnerable group for whom resource acquisition is related to personal safety and well-being. This study is a randomized controlled trial of a financial literacy curriculum designed for and delivered to a sample of 300 IPV survivors from 14 agencies in seven US states and Puerto Rico. Findings, based on difference-in-difference analyses and OLS regression models, indicate a strong effect of the curriculum on self-reported financial knowledge and behaviors and support the expansion of similar programs for survivors.