The Vanishing 2×2 Table: Linking the Hypergeometric,Binomial and Poisson

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.     

Sexual identity development among gay, lesbian, and bisexual youths: consistency and change over time

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.     

Recommended Reference Values for Risk Assessment of Oral Exposure to Copper

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.     

Differential associations and concordance across measures of parent emotion socialization: The role of parent and adolescent emotion dysregulation

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.     

‘They'd beat us with whatever is available to them’: Exploitation and abuse of Ghanaian domestic workers in the Middle East

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.     

Win statistics (win ratio,win odds,and net benefit) can complement one another to show the strength of the treatment effect on time-to-event outcomes

Conventional analyses of a composite of multiple time-to-event outcomes use the time to the first event. However, the first event may not be the most important outcome. To address this limitation, generalized pairwise comparisons and win statistics (win ratio, win odds, and net benefit) have become popular and have been applied to clinical trial practice. However, win ratio, win odds, and net benefit have typically been used separately. In this article, we examine the use of these three win statistics jointly for time-to-event outcomes. First, we explain the relation of point estimates and variances among the three win statistics, and the relation between the net benefit and the Mann–Whitney U statistic. Then we explain that the three win statistics are based on the same win proportions, and they test the same null hypothesis of equal win probabilities in two groups. We show theoretically that the Z-values of the corresponding statistical tests are approximately equal; therefore, the three win statistics provide very similar p-values and statistical powers. Finally, using simulation studies and data from a clinical trial, we demonstrate that, when there is no (or little) censoring, the three win statistics can complement one another to show the strength of the treatment effect. However, when the amount of censoring is not small, and without adjustment for censoring, the win odds and the net benefit may have an advantage for interpreting the treatment effect; with adjustment (e.g., IPCW adjustment) for censoring, the three win statistics can complement one another to show the strength of the treatment effect. For calculations we use the R package WINS, available on the CRAN (Comprehensive R Archive Network).     

Preparing Black and Latinx children for police encounters: Caregiver response profiles and child self-regulation

We hypothesized that the goodness-of-fit between profiles of observed, caregiver-provided ethnic–racial socialization (ERS), and child self-regulation (i.e., inhibitory control) would differentially associate with child behavioral outcomes. Conversations between 80 caregivers (45% Latinx; 55% Black) and their children (M _age  = 11.09; 46% female) were rated for ERS. Measures included an inhibitory control composite (ages 2.5–3.5) and the Child Behavior Checklist (CBCL; age 12). Three profiles were determined: Comprehensive (n  = 34), Reactive (n  = 8), and Pragmatic (n  = 38). Only youth with low inhibitory control in preschool appeared to benefit from Pragmatic ERS, whereas youth with normative or high inhibitory control in early childhood displayed lower internalizing and externalizing behaviors when they had Comprehensive or Reactive rather than Pragmatic caregivers.