Ecological regression analysis of environmental benzene exposure and childhood leukaemia: sensitivity to data inaccuracies, geographical scale and ecological bias

Benzene is classified as a group 1 human carcinogen by the International Agency for Research on Cancer, and it is now accepted that occupational exposure is associated with an increased risk of various leukaemias. However, occupational exposure accounts for less than 1% of all benzene exposures, the major sources being cigarette smoking and vehicle exhaust emissions. Whether such low level exposures to environmental benzene are also associated with the risk of leukaemia is currently not known. In this study, we investigate the relationship between benzene emissions arising from outdoor sources (predominantly road traffic and petrol stations) and the incidence of childhood leukaemia in Greater London. An ecological design was used because of the rarity of the disease, the difficulty of obtaining individual level measurements of benzene exposure and the availability of data. However, some methodological difficulties were encountered, including problems of case registration errors, the choice of geographical areas for analysis, exposure measurement errors and ecological bias. We use a Bayesian hierarchical modelling framework to address these issues, and we investigate the sensitivity of our inference to various modelling assumptions.     

Mothers' Cognitions about Relational Aggression: Associations with Discipline Responses, Children's Normative Beliefs, and Peer Competence

Prior research has shown that parental social cognitions are associated with child outcomes such as aggression. The goal of this study was to examine mothers' cognitions about relational aggression, and to explore linkages between mothers' attributions and normative beliefs about aggression and children's competence with peers. Participants included 103 mothers and children in grades 3 through 6. Results showed that mothers viewed relational aggression as more acceptable and normative than physical aggression, and they attributed less responsibility to children for using relational aggression. Maternal cognitions also predicted levels of sternness and disapproval in response to child relational aggression, and children's beliefs about the acceptability of relational aggression, which were associated with children's teacher-rated peer competence. Sex differences in the patterns of associations between maternal cognitions, discipline responses, child norms and peer competence were found. Applications of these results to parent education programs that are focused on relational aggression are discussed.     

Evaluation of an employee assistance program at a transportation company

The purpose of this study was to determine the effectiveness of an Employee Assistance Program (EAP) in terms of selected work performance indicators and treatment outcomes. Three primary data sources were utilized: a questionnaire administered to EAP users, reports from EAP counsellors on treatment diagnoses and outcomes, and employee records on absenteeism and other performance criteria over a five year time period. On the whole, EAP clients reported very favourable outcomes regarding the quality of services and improved well being, and the counsellors reported successful treatment outcomes. However, employee records on performance outcomes indicated that EAP clients had higher rates of problems before, during and after treatment, compared to a matched control group. Additionally, rates of sick days significantly increased from before to after treatment among EAP users.     

The private journey: An interpretative phenomenological analysis of exclusive breastfeeding

Background

Exclusive breast milk provides complete nutrition for a baby’s first six months of life. In Australia, breastfeeding initiation rates are high, however duration rates are low. Although numerous studies have explored the reasons behind low levels of breastfeeding, few have examined the experiences of women who maintain exclusive breastfeeding for the recommended six-month duration.

Youth transitions and migration: negotiated and constrained interdependencies within and across generations

This paper, based on a longitudinal and multi-sited ethnographic study, explores the intersection between youth transitions, migration and relationships. It considers the complex ways in which rural Bolivian young people move back and forth between work and education, between home and migrant destinations as they strive to form their own household and develop new relationships, whilst continuing to maintain interdependent relations with their parents and siblings. It presents three life stories which outline the key role of relationships in shaping youth transitions and migrant trajectories. Whilst the three pathways are different, they also encompass some similar features: the complexity of deciding between school or work, the key role of migration, the importance of social networks and old/new relationships, and the impact of birth-ordered and gendered household relations. In particular the paper argues that the concept of negotiated and constrained interdependencies is a useful way of understanding the flexible and opportunistic yet limited nature of youth transitions in a context of migration. The paper is based on fieldwork which involved tracking down 14 of the 18 households who had been involved in my doctoral research over 10 years ago, and of these 14 households one or both parents and two or three of the siblings were interviewed.     

The Use of Instructive Feedback to Promote Emergent Tact and Intraverbal Control: A Replication

Instructive feedback (IF) involves incorporating additional acquisition targets into skill-acquisition programs. A recent study by Frampton and Shillingsburg (2020) found that IF led to emergent verbal operants with two elementary-aged children diagnosed with autism spectrum disorder (ASD). The current study replicated Frampton and Shillingsburg with two children with ASD. Therapists conducted sessions of mastered listener-by-name trials (e.g., “Show me otter,” with pictures of otter, dog, and elephant) with IF statements for features of the target stimuli (e.g., “It lives in rivers.”) embedded during the consequence portion of the trial. We evaluated the acquisition of secondary targets and emergent responses using a concurrent multiple baseline across sets design. We observed increased correct responding for secondary targets and emergent responses for all three sets of stimuli with one participant. The other participant emitted correct responses for secondary targets and emergent operants with the first set but not with the other two sets of stimuli. Results suggested that IF can lead to emergent verbal operants, but the extent of emergence may be idiosyncratic.Supplementary InformationThe online version contains supplementary material available at 10.1007/s40616-022-00171-y.     

How do you measure trust in social institutions and health professionals? A systematic review of the literature (2012–2021)

The importance of measuring trust in health systems has been accentuated due to its correlation with important health outcomes aimed at reducing COVID-19 transmission. A systematic review published almost a decade ago identified gaps in measures including the lack of focus on trust in systems, inconsistency regarding the dimensionality of trust and need for research to strengthen the validity of measures. Given developments in our understandings of trust since its publication, we sought to identify new scales developed, existing ones adapted in response to identified gaps, and agendas for future research. Using the PRISMA approach for systematic reviews, we conducted a search in four databases. A total of 26 articles were assessed. Twelve new scales were identified, while 14 were adapted for different settings and populations. Literature continues to focus on measuring trust in health professionals rather than systems. Various shortcomings were identified, including some articles not mentioning the dimensions included in the scale and suboptimal use of validity and reliability testing and/or reporting. Moreover, a variety of terms were used for dimensions. Future research is needed to address these gaps and consequently, to understand their correlation with health behaviors and outcomes more accurately.