Background The treated prevalence of psychotic disorders in remote communities of Cape York and the Torres Strait, Australia, has been shown to be elevated compared with the Australian population. Our study used a unique dataset to assess treated incidence and prevalence of psychotic disorders and mortality over a 23-year period in the adult Indigenous population of this region. Methods Data was collated from a clinical database that contains complete psychiatric records from 1992 to 2015, extracted for all Indigenous patients who received treatment for a psychotic disorder from the Remote Area Mental Health Service, and linked to the Queensland Deaths Registry. We calculated 12-month treated prevalence and incidence for each calendar year. Mortality rates were compared to the overall and Indigenous population death rates in Queensland. Findings Between 1992 and 2015, 424 patients were treated for psychosis – an age-standardised 12-month prevalence of 1·7% in 2015, approximately two times higher in men than women, and three times higher in Aboriginal versus Torres Strait Islander populations. The highest treated prevalence was observed in 2015 in Aboriginal men (4.0%). A range of psychotic disorders were detected, including many substance-induced cases (n = 93) and schizophrenia (n = 252). The age-standardised 12-month incidence rate over the study period was 3.61 per 1000 person-years for women and 4.23 per 1000 person-years for men. Treated prevalence increased throughout the study period, largely attributable to increases in incidence of schizophrenia and schizoaffective disorder – in contrast, the incidence and prevalence of bipolar and mood disorders remained low and stable. Increased mortality risk compared to the Queensland Indigenous population (SMR = 1.9; 95% CI 1.4–2.6) was attributable to the elevated risk shown in the Aboriginal population in our study (SMR = 2.6; 95% CI 1.8–3.7). Interpretation Our results show extremely high prevalence rates of psychosis; increasing prevalence over time; differences in the distribution of psychosis between Aboriginal and Torres Strait Islander populations; and increased mortality risk for Aboriginal people living with psychosis in this region. These observations strongly suggest an aetiological role of environmental and neurodevelopmental factors, and the contribution of social factors to vulnerability and premature mortality. Role of the funding source This study was funded by who are the custodians of this database. The funder had no role in study design, data analysis, data interpretation, writing of the report, or submission for publication. All authors had full access to all the study data. The corresponding author had final responsibility for the decision to submit for publication. FJC is supported by an Australian National Health and Medical Research Council ( ) Early Career Fellowship (APP1138488). ...

Background The objectives of this scoping review are to investigate the characteristics assessed by existing vulnerability indices and the health outcomes achieved by applying them to people experiencing homelessness. This review forms part of the development and implementation of a novel tool to prioritise people experiencing homelessness for healthcare based on their need and capacity to access healthcare. Methods Included papers were primary research, published in the English language, participants were experiencing homelessness and aged over 18 years at the time of the study, a vulnerability index was used in the study, sample size was greater than 30, and the study had a health focus. Databases searched were MEDLINE, Embase, CINAHL, Scopus, PubMed and Web of Science, between January-April 2020. The Joanna Briggs Appraisal criteria were used to quality appraise the included studies. Results were synthesised narratively. Results Six papers were included, a total of 27,509 participants. The reported use of the indices varied; they included screening and profiling homeless populations, comparing homeless populations, and two studies evaluated the predictive capacity, reliability and validity of the indices. One vulnerability index focused on screening for human immunodeficiency virus, one used a 50-item index and four used a nine-item index. No direct health outcomes were reported from applying the vulnerability indices. The studies identified limitations of using vulnerability indices, including the potential bias of relying on self-reported data and two studies highlighted the need for further psychometric testing to ensure validity and reliability of the indices. Discussion The sample of included studies was small. Vulnerability indices are reportedly a useful and easily accessible method of gaining valuable data on the health status and health needs of people experiencing homelessness. The variety of characteristics included in the vulnerability indices suggests the importance of tailoring vulnerability indices to the needs of the population to which it is to be applied. Conducting appropriate psychometric testing is critical so that an index can be used to accurately inform decision making and accurately prioritise people experiencing homelessness who are most at risk of mortality and morbidity. A specific tool that prioritises people experiencing homelessness for access to health care is not yet available. The review was funded by a St Vincent’s Network Inclusive Health grant.

ObjectivesIn this paper, we report the development of the Homeless Health Access to Care Tool. This tool aims to improve the gap in assessing health need and capacity to access healthcare of people experiencing homelessness. Tools exist that prioritise people experiencing homelessness for housing, but none specifically designed to prioritise for healthcare, or that are succinct enough to be easily implemented to emergency department or primary healthcare settings.Design and settingThe Homeless Health Access to Care Tool has been adapted from an existing tool, the Vulnerability Index Service Prioritisation Decision Assistance Tool through a five-step process: (1) domain identification, (2) literature review, (3) analysis of hospital admission data, (4) expert judges, and (5) Delphi study.ParticipantsThe tool was adapted and developed by homeless health clinicians, academics and people with lived experience of homelessness. The Delphi study (n=9) comprised emergency department and homeless health clinicians.ResultsConsensus was gained on all but one item, five new items were added, and wording changes were made to six items based on expert feedback. Participants perceived the tool would take between 5 to 11 min to complete, the number of items were appropriate, and the majority agreed it would facilitate the assessment of health needs and capacity to access healthcare.ConclusionRobust development of the Homeless Health Access to Care Tool through the Delphi is the first phase of its development. The Homeless Health Access to Care Tool offers an opportunity to assess both health need and capacity to access healthcare with the aim to improve access to healthcare for people experiencing homelessness. This tool will facilitate standardised data collection to inform service design and data linkage regarding access to healthcare of people experiencing homelessness. The next stages of testing include construct validity, feasibility, usability and inter-rater reliability, and pilot implementation.

Objective: Previous research has found an alarmingly high rate of psychosis in Indigenous1 patients from remote communities of Cape York and the Torres Strait with the treated prevalence of psychosis four times higher than that found for the Australian population. This study assesses comorbid illness and risk factors among this same cohort of psychosis patients. Methods: Data were collated from a clinical database that contains complete psychiatric records from 1992 to 2015, extracted for all Indigenous patients who received treatment for a psychotic disorder from the Remote Area Mental Health Service. Descriptive analysis and logistic regression models explored differences across subgroups of ethnicity and sex, and relationships between co-morbid disorders and risk factors. All multivariate models included variables of age, year of birth, sex and ethnicity. Results: Sixty per cent of participants ( n = 256) experienced a comorbid mental or substance use disorder. Forty-five per cent ( n = 192) of participants experienced a physical comorbidity. The most frequent physical health outcomes were injury (29%, n = 93), diabetes (18%, n = 58) and cardiovascular disease (21%, n = 68). Risk factors considered to play a potential biological or neurodevelopmental role in the development of psychosis were approximately three times more likely in Aboriginal (odds ratio = 3.2; 95% confidence interval = [2.0, 4.9]) versus Torres Strait Islander patients, and those born after 1980 (odds ratio = 2.5; 95% confidence interval = [1.6, 3.9]) versus those born prior to 1980. Environmental or contextual factors were associated with significantly greater risk among Aboriginal (odds ratio = 3.8; 95% confidence interval = [2.4, 6.0]) compared with Torres Strait Islander patients. Conclusion: Our data expose the perinatal and early environment of Indigenous children who later developed a psychotic disorder. As risk factors for schizophrenia may be cumulative and interactive, both with each other and with critical periods of neurodevelopmental vulnerability, our results suggest possible causes for the increasing prevalence of psychotic disorders between 1992 and 2015.

Objective: The relationship between psychosis and contact with the criminal justice system for Indigenous people living in rural and remote areas is not well understood. In this study, the authors examine patterns of incarceration among Indigenous people living with psychosis in Cape York and the Torres Strait over two decades. Methods: Data were collated from a clinical database of complete psychiatric records from 1992 to 2015, extracted for all Indigenous patients with a psychotic disorder from the Remote Area Mental Health Service, and linked to the Queensland Corrections Service database. Descriptive statistics were calculated to compare characteristics between those incarcerated and those not incarcerated during the study period and to quantify patterns of incarceration including types of offences, time spent in custody and frequency of incarceration. Multivariate Cox regression analysis was used to assess associations between reported variables and ‘first incarceration’. Results: Forty-five percent of Aboriginal patients ( n = 116) were incarcerated compared with 31% of Torres Strait Islanders ( n = 41) ( p = 0.008), and the proportion of males incarcerated (51%, n = 141) was approximately twice that of females (24%, n = 35; p = 0.001). A cluster of first incarcerations were observed in close time proximity to diagnosis of psychosis. Individuals who had a history of both alcohol and cannabis use had approximately two times higher risk of being incarcerated following positive diagnosis compared to those without a history of substance use (hazard ratio = 1.85; 95% confidence interval: [1.08, 3.17]; p = 0.028). Males accounted for approximately 85% ( n = 328) of sentences. The most common most serious offence was causing physical harm to others (assault – n = 122, 31%). Conclusion: Our study found that for Aboriginal and Torres Strait Islander people with a psychotic disorder in North Queensland, criminal justice responses with resultant incarceration occurs frequently. Access to appropriate mental health services and diversion options for Indigenous Australians with psychosis should be a key public health and justice priority.