The dimensionality of infection networks among viruses infecting microbial eukaryotes and bacteria.

Diverse viruses and their hosts are interconnected through complex networks of infection, which are thought to influence ecological and evolutionary processes, but the principles underlying infection network structure are not well understood. Here we focus on network dimensionality and how it varies across 37 networks of viruses infecting eukaryotic phytoplankton and bacteria. We find that dimensionality is often strikingly low, with most networks being one- or two-dimensional, although dimensionality increases with network richness, suggesting that the true dimensionality of natural systems is higher. Low-dimensional networks generally exhibit a mixture of host partitioning among viruses and nestededness of host ranges. Networks of bacteria-infecting and eukaryote-infecting viruses possess comparable distributions of dimensionality and prevalence of nestedness, indicating that fundamentals of network structure are similar among domains of life and different viral lineages. The relative simplicity of many infection networks suggests that coevolutionary dynamics are often driven by a modest number of underlying mechanisms.

Missing Voices: Profile, Extent, and 12-Month Outcomes of Nonfatal Traumatic Brain Injury in Aboriginal and Non-Aboriginal Adults in Western Australia Using Linked Administrative Records.

OBJECTIVE: To investigate differences in the profile and outcomes between Aboriginal and non-Aboriginal Western Australians (WAs) hospitalized with traumatic brain injury (TBI). SETTING: WA hospitals. PARTICIPANTS: TBI cases aged 15 to 79 years surviving their first admission during 2002-2011. DESIGN: Patients identified from diagnostic codes and followed up for 12 months or more using WA-wide person-based linked hospital and mortality data. MAIN MEASURES: Demographic profile, 5-year comorbidity history, injury mechanism, injury severity, 12-month readmission, and mortality risks. Determinants of 12-month readmission. RESULTS: Of 16 601 TBI survivors, 14% were Aboriginal. Aboriginal patients were more likely to be female, live remotely, and have comorbidities. The mechanism of injury was an assault in 57% of Aboriginal patients (vs 20%) and transport in 33% of non-Aboriginal patients (vs 17%), varying by remoteness. One in 10 Aboriginal TBI patients discharged themselves against medical advice. Crude 12-month readmission but not mortality risk was significantly higher in Aboriginal patients (48% vs 36%). The effect of age, sex, and injury mechanism on 12-month readmission was different for Aboriginal and non-Aboriginal patients. CONCLUSION: These findings suggest an urgent need for multisectoral primary prevention of TBI, as well as culturally secure and logistically appropriate medical and rehabilitation service delivery models to optimize outcomes.

Engaging Australian Aboriginal narratives to challenge attitudes and create empathy in health care: a methodological perspective.

BACKGROUND: Unconscious bias and negative attitudes towards minority groups have detrimental effects on the way health care is, or is not, provided to these groups. Recognition of racist attitudes and behaviours as well as understanding clients' experiences of health and health care are pivotal to developing better health care strategies to positively impact on the quality and safety of care provided to Indigenous people. Indigenous research demands inclusive research processes and the use of culturally appropriate methodologies. This paper presents a methodological account of collecting narratives which accurately and respectfully reflect Aboriginal Australians' experiences with health care in Western Australia. The purpose of these narratives is to provide health students and professionals with an opportunity to 'walk-in the shoes' of Aboriginal people where face-to-face interaction is not feasible. METHODS: With the incorporation of Indigenous peoples' voices being an important link in cultural safety, the project was led by an Indigenous Reference group, who encouraged active participation of Aboriginal people in all areas of the project. Using a phenomenological approach and guided by the Indigenous Reference group, yarning data collection was implemented to collect stories focusing on Aboriginal people's experiences with health care services. An open-access, on-line website was established to host education resources developed from these "yarns". RESULTS: Yarning provided a rich source of information on personal experiences and encouraged the story provider to recognise their facilitative role in the research process. While the methodology used in this project was lengthy and labour-intensive it afforded a respectful manner for story collection and highlighted several innate flaws when Western methods are applied to an Indigenous context. CONCLUSION: Engagement of an Indigenous Reference Group was pivotal to designing an appropriate methodology that incorporated the voices of Aboriginal people in a multimedia resource of Aboriginal narratives. However further research is warranted to understand how the resources are being used and integrated into curricula, and their impact on students and health care outcomes.

Statistical analysis plan for the stepped wedge clinical trial Healing Right Way-enhancing rehabilitation services for Aboriginal Australians after brain injury.

BACKGROUND: Aboriginal Australians are known to suffer high levels of acquired brain injury (stroke and traumatic brain injury) yet experience significant barriers in accessing rehabilitation services. The aim of the Healing Right Way trial is to evaluate a culturally secure intervention for Aboriginal people with newly acquired brain injury to improve their rehabilitation experience and quality of life. Following publication of the trial protocol, this paper outlines the statistical analysis plan prior to locking the database.  METHODS: The trial involves a stepped wedge design with four steps over 3 years. Participants were 108 adult Aboriginal Australians admitted to one of eight hospitals (four rural, four urban) in Western Australia within 6 weeks of onset of a new stroke or traumatic brain injury who consented to follow-up for 26 weeks. All hospital sites started in a control phase, with the intervention assigned to pairs of sites (one metropolitan, one rural) every 26 weeks until all sites received the intervention. The two-component intervention involves training in culturally safe care for hospital sites and enhanced support provided to participants by Aboriginal Brain Injury Coordinators during their hospital stay and after discharge. The primary outcome is quality of life as measured by the Euro QOL-5D-3L VAS. A mixed effects linear regression model will be used to assess the between-group difference at 26 weeks post-injury. The model will control for injury type and severity, age at recruitment and time since commencement of the trial, as fixed effects. Recruitment site and participant will be included as random effects. Secondary outcomes include measurements of function, independence, anxiety and depression, carer strain, allied health occasions of service received and hospital compliance with minimum processes of care based on clinical guidelines and best practice models of care. DISCUSSION: The trial will provide the first data surrounding the effectiveness of an intervention package for Aboriginal people with brain injury and inform future planning of rehabilitation services for this population. The statistical analysis plan outlines the analyses to be undertaken. TRIAL REGISTRATION: Australia New Zealand Clinical Trials Registry ACTRN12618000139279. Registered 30 January, 2018.

"You felt like a prisoner in your own self, trapped": the experiences of Aboriginal people with acquired communication disorders.

PURPOSE: Aboriginal Australians are under-represented in brain injury rehabilitation services despite a high incidence of both stroke and traumatic brain injury in this population. This study aimed to explore the experiences of Aboriginal Australian adults with acquired communication disorders (ACDs) after brain injury for the first time to inform the development of accessible and culturally secure service delivery models. METHODS AND MATERIALS: Semi-structured interviews were undertaken with 32 Aboriginal people who had experienced a brain injury resulting in ACDs (aged 35-79 years) and 18 family members/carers across Western Australia. Thematic analysis identified common themes across participants. RESULTS: Overall themes related to communication (both related to the communication disorder and general healthcare interactions), health and social contexts, recovery, and support, being away from family and country, knowledge and beliefs about brain injury, and follow-up. CONCLUSIONS: An increase in healthcare staff's appreciation of the health and social contexts of Aboriginal people after brain injury is needed in order to improve communication with Aboriginal patients and the ability to offer accessible rehabilitation services. Ongoing support is required, with cultural identity noted as key to ensuring cultural security and ultimately recovery. Involvement of family and other Aboriginal people in recovery processes, as well as access to relevant Aboriginal languages and proximity to ancestral lands is central.Implications for rehabilitationAcknowledgment of cultural identity and strengths through involvement of extended family and Aboriginal Hospital Liaison Officers, access to language and proximity to country all central to rehabilitation planning for Aboriginal people after brain injury.Cultural security training for rehabilitation staff is recommended focusing on clear two-way communication skills to make medical information accessible for Aboriginal patients and to listen to patients' concerns in a way that respects cultural context.Information regarding practical support and implications for ongoing management of life after brain injury (for the person and their family) is essential, and should supplement the medical-related information provided.Follow-up post discharge from hospital best facilitated through establishing contact with local Aboriginal community through Aboriginal community controlled health services, community elders, and Aboriginal health workers across organisations.

Healing Right Way: study protocol for a stepped wedge cluster randomised controlled trial to enhance rehabilitation services and improve quality of life in Aboriginal Australians after brain injury.

INTRODUCTION: Despite higher incidence of brain injury among Aboriginal compared with non-Aboriginal Australians, suboptimal engagement exists between rehabilitation services and Aboriginal brain injury survivors. Aboriginal patients often feel culturally insecure in hospital and navigation of services post discharge is complex. Health professionals report feeling ill-equipped working with Aboriginal patients. This study will test the impact of a research-informed culturally secure intervention model for Aboriginal people with brain injury. METHODS AND ANALYSIS: Design: Stepped wedge cluster randomised control trial design; intervention sequentially introduced at four pairs of healthcare sites across Western Australia at 26-week intervals.Recruitment: Aboriginal participants aged ≥18 years within 4 weeks of an acute stroke or traumatic brain injury.Intervention: (1) Cultural security training for hospital staff and (2) local, trial-specific, Aboriginal Brain Injury Coordinators supporting participants.Primary outcome: Quality-of-life using EuroQOL-5D-3L (European Quality of Life scale, five dimensions, three severity levels) Visual Analogue Scale score at 26 weeks post injury. Recruitment of 312 participants is estimated to detect a difference of 15 points with 80% power at the 5% significance level. A linear mixed model will be used to assess the between-condition difference.Secondary outcome measures: Modified Rankin Scale, Functional Independence Measure, Modified Caregiver Strain Index, Hospital Anxiety and Depression Scale at 12 and 26 weeks post injury, rehabilitation occasions of service received, hospital compliance with minimum care processes by 26 weeks post injury, acceptability of Intervention Package, feasibility of Aboriginal Brain Injury Coordinator role.Evaluations: An economic evaluation will determine the potential cost-effectiveness of the intervention. Process evaluation will document fidelity to study processes and capture changing contexts including barriers to intervention implementation and acceptability/feasibility of the intervention through participant questionnaires at 12 and 26 weeks. ETHICS AND DISSEMINATION: The study has approvals from Aboriginal, university and health services human research ethics committees. Findings will be disseminated through stakeholder reports, participant workshops, peer-reviewed journal articles and conference papers. TRIAL REGISTRATION NUMBER: ACTRN12618000139279.

General practitioners' perceptions of their communication with Australian Aboriginal patients with acquired neurogenic communication disorders.

OBJECTIVE: Aboriginal people have high rates of stroke and traumatic brain injury (TBI), often with residual, chronic communication deficits and multiple co-morbidities. This study examined general practitioners' (GPs') perceptions of their communication with Aboriginal patients with acquired communication disorders (ACD) after brain injury. Effective communication underpins good care but no previous research has explored this specific context. METHODS: A qualitative descriptive approach was employed using interviews and focus groups with 23 GPs from metropolitan Perth and five regional sites in Western Australia. Data were analysed thematically. RESULTS: GPs reported low visibility of Aboriginal patients with ACD in their practices, minimal training on neurogenic ACD, and difficulty distinguishing ACD from cultural-linguistic factors. They had few communication resources, and depended on families and Aboriginal Health Workers to assist in interactions. They rarely used formal interpreting services or referred to speech pathology. They reported communication (dis)ability having low priority in consultations. CONCLUSION: GPs report difficulty recognising ACD and their lack of prioritising assessment and treatment of communication ability after brain injury potentially compounds the disadvantage and disempowerment experienced by many Aboriginal people. PRACTICE IMPLICATIONS: GPs require further communication and cultural training. Improved access to speech pathology and formal interpreting services would be beneficial.

Closing the gap: A whole of school approach to Aboriginal and Torres Strait Islander inclusivity in higher education.

The recruitment and retention of Aboriginal and Torres Strait Islander nurses and midwives is key to the delivery of culturally appropriate health care and improving the health outcomes of Aboriginal and Torres Strait Islander people. A working group to address inclusion and engagement of Aboriginal and Torres Strait Islander students at a West Australian University has impacted on the curricula, faculty staff and Aboriginal and Torres Strait Islander students within the School of Nursing and Midwifery. The University's Reconciliation Action Plan was the foundation and catalysed the group to promote cultural safety education for staff and provide inclusive activities for Aboriginal and Torres Strait Islander students. A conceptual framework was developed to demonstrate the action taken within the School of Nursing and Midwifery to address the inequity for Aboriginal and Torres Strait Islander students that could be seen to exist. Through collaboration with staff and students, both Aboriginal and Torres Strait Islander people and non-Aboriginal people, a shared understanding and goal setting has developed to enable positive action to provide ongoing support for these students at all parts of their journey in higher education. This paper will highlight the process involved to promote the recruitment, retention and academic success of these students.

Development of the Aboriginal Communication Assessment After Brain Injury (ACAABI): A screening tool for identifying acquired communication disorders in Aboriginal Australians.

PURPOSE: Acquired communication disorders (ACD), following stroke and traumatic brain injury, may not be correctly identified in Aboriginal Australians due to a lack of linguistically and culturally appropriate assessment tools. Within this paper we explore key issues that were considered in the development of the Aboriginal Communication Assessment After Brain Injury (ACAABI) - a screening tool designed to assess the presence of ACD in Aboriginal populations. METHOD: A literature review and consultation with key stakeholders were undertaken to explore directions needed to develop a new tool, based on existing tools and recommendations for future developments. RESULT: The literature searches revealed no existing screening tool for ACD in these populations, but identified tools in the areas of cognition and social-emotional wellbeing. Articles retrieved described details of the content and style of these tools, with recommendations for the development and administration of a new tool. The findings from the interview and focus group views were consistent with the approach recommended in the literature. CONCLUSIONS: There is a need for a screening tool for ACD to be developed but any tool must be informed by knowledge of Aboriginal language, culture and community input in order to be acceptable and valid.

Communication disorders after stroke in Aboriginal Australians.

PURPOSE: Limited research exists on acquired communication disorders (ACD) in Aboriginal Australians despite their high rates of stroke. Their uptake of rehabilitation services is low, and little information is available on functional consequences for this population. This pilot study explored consequences of ACD for Aboriginal Australians after stroke, including their experiences of services received. METHOD: Semi-structured interviews were collected with 13 Aboriginal people with ACD, and family members, in Perth. Ages ranged from 30 to 78 years and time post stroke from 0.5 to 29 years. A qualitative, thematic analysis of interview transcripts was undertaken. RESULTS: The key themes which emerged were "getting on with life", coping with change, independence/interdependence, the importance of communication for maintaining family and community connection, role and identity issues and viewing the stroke consequences within the broader context of co-morbidities. CONCLUSIONS: While similar life disruptions were found to those previously reported in the general stroke population, this study highlighted differences, which reflect the particular context of ACD for Aboriginal people and which need to be considered when planning future services. While implications are limited due to small numbers, the findings emphasise the importance of a holistic approach, and integration of communication treatments into community-led social activities. Implications for Rehabilitation Aboriginal Australians frequently experience a range of concurrent and complex co-morbidities and demanding social or family circumstances at the same time as coping with communication disorders post-stroke. A holistic approach to post stroke rehabilitation may be appropriate with services that accommodate communication disorders, delivered in collaboration with Aboriginal organisations, emphasising positive attitudes and reintegration into community as fully as possible. Communication and yarning are important for maintaining family and community connection and identity, and family and community context should be incorporated into all assessment and treatment activities.

Living with aphasia: three Indigenous Australian stories.

The incidence of cardiovascular disorders and stroke in Australian Aboriginal communities is more than twice as high as non-Indigenous Australians. Approximately 30% of people who survive stroke are left with some level of aphasia, and yet Indigenous Australians appear to be infrequent users of speech-language pathology services, and there is virtually no research literature about the experiences of aphasia for this group of people. This paper presents the stories of living with aphasia for three Indigenous Australian men living in Perth, Western Australia. Their narratives were collected by an Indigenous researcher through in-depth, supported interviews, and were explored using both within-case and cross-case analyses for common and recurring themes. It is argued that there is value for speech-language pathologists, and other health professionals, to be aware of the broad experiences of living with aphasia for Indigenous Australians because their stories are rarely heard and because, as with people with aphasia generally, they are at risk of social isolation and tend to lack visibility in the community. This study explores the key issues which emerge for these three men and highlights the need for further research in this area.