Publications by authors named "Dixon H"

Low-income, urban-dwelling Black adults are disproportionately affected by traumatic experiences, post-traumatic stress disorder (PTSD), and depression and encounter inequities in treatment access. In addition to the benefits Mindfulness-Based Cognitive Therapy (MBCT) for depression, there is preliminary evidence of successful symptom reduction in PTSD via MBCT across two prior pilot studies in veterans. Studies examining the effects of MBCT among trauma-exposed Black adults remains limited, and examination of effects across specific PTSD clusters is almost nonexistent.

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Child-oriented snack foods often display front-of-pack images suggesting they are natural or wholesome, yet many of these products are ultra-processed and nutrient poor. This study investigated parent's perceptions in response to common forms of front-of-pack food imagery on child-orientated snacks. An online experiment comprising four between-subjects food image conditions (no image; food photo; food cartoon; cartoon of children gardening) and two within-subjects snack type conditions (fruit; vegetable) was conducted with N = 800 Australian adult parents/guardians of children aged 4-10 years.

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Article Synopsis
  • This study explored how common health-related marketing messages on alcohol products lead to misconceptions about their healthiness among Australian adults aged 18-65 who drink alcohol.
  • The survey found that a significant number of participants (75%) believed certain marketing cues indicated an alcohol product was 'better for you,' and 61% thought the type of alcohol was just as important as the amount consumed when assessing health risks.
  • Misinterpretations varied by age, gender, education, and socioeconomic status, indicating a need for better regulation of alcohol marketing and tailored health promotion strategies based on specific demographic misperceptions.
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Background: Sugar-sweetened beverages (SSBs) account for a significant proportion of sugar in the diet of children and are directly associated with obesity in this group. While there have been many studies on adolescent SSB consumption, few studies have examined the predictors of SSB consumption in primary-school-aged children. The aim of this study was to understand the degree to which a child's consumption across a range of beverages is influenced by their own attitudes and by their parents' attitudes and parents' consumption behaviours.

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Deemed consent legislation for deceased organ donation was introduced in England in 2020, and is considered a vital part of the new UK NHS Blood and Transplant's 10-year strategy to increase consent for organ donation. Despite the legislation containing safeguards to protect the public, the introduction of deemed consent creates ethical, psychological and social un/certainties for healthcare professionals in their practice. In this paper, we offer insights into healthcare professionals' perspectives on deemed consent, drawn from interview data with 24 healthcare professionals in an NHS Trust in England, prior to the introduction of the legislation.

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  • Report-back of research results (RBRR) aims to improve environmental health literacy (EHL), but standardized measurement tools are lacking.
  • This study developed a report on air pollutant exposure during pregnancy and evaluated its impact on EHL through participant feedback across two groups.
  • Although participant engagement helped shape the report, the survey results indicated no significant improvement in understanding air pollutants between the initial and revised documents, highlighting the need for better evaluation tools and mixed-method approaches in future studies.
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Background: The retail market for toddler-specific packaged foods is growing. Many of these products are ultra-processed and high in nutrients of concern for health, yet marketed in ways that may make them appear wholesome. This study aims to assess parents' responses to claims on unhealthy, ultra-processed toddler food products and test whether removing such claims promotes more accurate product perceptions and healthier product preferences.

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Objective: Some claims on alcohol labels highlight virtuous aspects of brands or products, including in health-, eco-, and cause-oriented domains (including charity partnerships, or ethical or humanitarian certifications). This virtue marketing may create a "halo" whereby consumers generalize from specific attributes to a more favorable overall appraisal of the product, brand, or even alcohol or the alcohol industry in general. This study aims to describe the prevalence of and trends over time in virtue marketing on the packaging of new alcohol (including lower- and zero-alcohol) products on the Australian market.

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Article Synopsis
  • * The program uses impactful visual messaging about the dangers of excess body weight and promotes healthier eating habits through TV-led campaigns.
  • * Evaluation results from 2012 to 2019 indicate significant increases in awareness of the link between obesity and chronic diseases, as well as positive shifts in intentions to consume more fruits and vegetables and reduce sugary drink intake among participants.
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Mindfulness-based cognitive therapy (MBCT) offers promise as a group-based intervention to alleviate posttraumatic stress disorder (PTSD) and depression symptoms in traumatized Black adults. Given the high level of barriers that exist for low-income Black adults, virtual delivery of MBCT may be helpful. This pilot randomized controlled trial assessed feasibility and acceptability of an adapted 8-week virtual MBCT group intervention for Black adults screening positive for PTSD and depression.

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To understand how chemical exposure can impact health, researchers need tools that capture the complexities of personal chemical exposure. In practice, fine particulate matter (PM) air quality index (AQI) data from outdoor stationary monitors and Hazard Mapping System (HMS) smoke density data from satellites are often used as proxies for personal chemical exposure, but do not capture total chemical exposure. Silicone wristbands can quantify more individualized exposure data than stationary air monitors or smoke satellites.

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Background: Operating room (OR) traffic disrupts airflow and increases particle count, which predisposes patients to surgical site infections, particularly in longer surgeries with hardware placement. The aim of this study is to evaluate the rate of traffic during neurosurgical procedures, as well as reasons for and perceptions of OR traffic.

Methods: This is a single-center, multimethod study monitoring neurosurgical OR traffic through direct observation, automated monitoring, and interviews.

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Article Synopsis
  • Polycyclic aromatic hydrocarbons (PAHs) are common environmental pollutants linked to various health issues, but understanding their specific sources of exposure is still limited.
  • This study focuses on a New York birth cohort to identify personal characteristics and behaviors that could help predict individual PAH exposure levels.
  • Key findings indicate that factors such as income, time spent outdoors, maternal age, country of birth, transportation type, and season are significant predictors of PAH exposure among pregnant individuals.
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Wearable silicone wristbands are a rapidly growing exposure assessment technology that offer researchers the ability to study previously inaccessible cohorts and have the potential to provide a more comprehensive picture of chemical exposure within diverse communities. However, there are no established best practices for analyzing the data within a study or across multiple studies, thereby limiting impact and access of these data for larger meta-analyses. We utilize data from three studies, from over 600 wristbands worn by participants in New York City and Eugene, Oregon, to present a first-of-its-kind manuscript detailing wristband data properties.

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This study aims to assess relationships between previous stroke diagnosis and demographic or disability status variables, stratified by U.S. citizenship status.

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Wearable silicone wristbands are a rapidly growing exposure assessment technology that offer researchers the ability to study previously inaccessible cohorts and have the potential to provide a more comprehensive picture of chemical exposure within diverse communities. However, there are no established best practices for analyzing the data within a study or across multiple studies, thereby limiting impact and access of these data for larger meta-analyses. We utilize data from three studies, from over 600 wristbands worn by participants in New York City and Eugene, Oregon, to present a first-of-its-kind manuscript detailing wristband data properties.

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Article Synopsis
  • The study investigates the effectiveness of Social Cognition Interaction Training (SCIT) for improving social cognition and functional outcomes in patients with schizophrenia compared to a wait-list control group.
  • Results showed no significant improvements in neurocognition, social cognition, or self-reported symptoms for SCIT participants; however, there was a trend suggesting better interpersonal and role functioning.
  • Shorter illness duration was associated with better post-training neurocognition and self-esteem, highlighting the importance of selecting appropriate outcome measures and understanding treatment moderators for future interventions.
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Aims: To test whether showing spectators counter-advertisements exposing alcohol harms alone, or exposing alcohol harms and alcohol sponsorship, before watching an alcohol-sponsored sporting event promotes less favourable post-event attitudes and intentions towards alcohol sponsor brands and alcohol in general.

Design: On-line between-subjects experiment.

Setting: Australia.

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Research is increasingly linking mindfulness with better relationship outcomes. Less clear is whether these benefits extend to the sexual domain or whether the benefits of mindfulness are moderated by individual characteristics. Accordingly, the current report tested whether a brief online mindfulness intervention improved the cognitive, affective, and behavioral aspects of sexual experiences and whether effects varied by attachment anxiety and avoidance.

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Background: Exposure to alcohol advertising and sponsorship through elite sport is associated with harmful use of alcohol. Owing to strong financial and cultural ties between alcohol and sport in Australia, policy action to restrict alcohol sport sponsorship is unlikely to occur without strong public support for change. This study tested whether exposure to counter-advertising exposing industry marketing of harmful products-a technique shown to be effective in tobacco control-promotes higher support for policy change and less favourable beliefs about the alcohol industry among sport spectators.

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Background: Effective drying of the internal channels of endoscopes is essential to prevent the growth of water-borne pathogens and to assure adequate sterilization with vaporized hydrogen peroxide or ethylene oxide. The aim of this study was to evaluate the dryness of endoscopes after a routine disinfection process in an automated endoscope reprocessor.

Methods: Stripped endoscopes (SE) that allow for visual inspection of the inside channels were reprocessed per protocol in a large urban medical center, with a 3-minute or 10-minute air flush following reprocessing.

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Background/aims: Discretionary, energy-dense, nutrient-poor food and drinks are heavily marketed and readily available in retail settings frequented by adolescents. This study examines associations between food purchasing practices in various retail settings and dietary intake among Australian adolescents.

Methods: Participants were students in years 8 to 11 (ages 12-17 years) who completed the 2009-10 (n = 13 790), 2012-13 (n = 10 309) or 2018 (n = 9102) National Secondary Students' Diet and Activity (NaSSDA) cross-sectional survey.

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Classroom-based assessment (CBA) is an approach for learning improvement that has been advocated as having strong potential in enhancing learner autonomy of young language learners (YLLs). This study investigated Chinese primary school English as a foreign language (EFL) teachers' beliefs about CBA, their assessment practices, and the relationship between their CBA beliefs and practices. Drawing on data from a survey of 195 Chinese primary school EFL teachers, results showed that the teachers positively believed in the value of various CBA processes, including planning assessment, collecting learning evidence, making professional judgments and providing appropriate feedback, and they also attempted to enact these assessment practices; belief-practice alignment was also identified, showing that teachers' beliefs about CBA were significant predictors of their assessment practices.

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Mass media campaigns can change attitudes and behaviours to improve population health. However, a key challenge is achieving share of voice in a complex and cluttered media environment. The aim of this study was to compare advertising expenditure on public health campaigns for obesity prevention (and related healthy eating and physical activity campaigns) with competing commercial categories of (a) sugary drinks, (b) artificially sweetened drinks and (c) diet/weight loss products and programmes.

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