Ashleigh Stewart

Burnet Institute · Public Health

The National Naloxone Reference Group has played a key role in the development of take‐home naloxone programs, policy and practice in Australia. In this commentary we detail the origins of the group, some of its main achievements since its inception and its future directions in light of the major policy changes around naloxone that have recently oc...

Background: Individuals with HIV and hepatitis C virus (HCV) who remain untreated with direct-acting antivirals can contribute to HCV transmission and HCV-related mortality. We aimed to compare rates of uptake of direct-acting antivirals following unrestricted access to this treatment in high-income countries and examine factors associated with re...

Background A precipitous decline in health status among people recently released from prison is common. In Victoria, Australia, opioid agonist treatment (OAT) in the community involves frequent contact with primary care, potentially facilitating broader use of primary healthcare services. Among a cohort of men who injected drugs regularly pre-impri...

Abstract Background Longitudinal studies are critical to informing evolving responses to COVID-19 but can be hampered by attrition bias, which undermines their reliability for guiding policy and practice. We describe recruitment and retention in the Optimise Study, a longitudinal cohort and social networks study that aimed to inform public health a...

Aim: Longitudinal cohort studies are important for understanding the social and health trajectories of people who inject drugs. Little research exists, however, about the motivations, challenges, and experiences of participation in these studies. Methods: To address this gap, we conducted in-depth interviews with participants of an open-ended natur...

Background: People recently released from prison engage with emergency healthcare at greater rates than the general population. While retention in opioid agonist treatment (OAT) is associated with substantial reductions in the risk of opioid-related mortality postrelease, it is unknown how OAT affects contact with emergency healthcare. In a cohort...

Background Broad direct-acting antiviral (DAA) access may reduce hepatitis C virus (HCV) incidence through a “treatment as prevention” (TasP) effect. We assessed changes in primary HCV incidence following DAA access among people living with HIV (PLHIV). Methods We used pooled individual-level data from six cohorts from the International Collaborat...

Background Retention in opioid agonist treatment (OAT) following release from prison is associated with improved outcomes, however factors associated with post-release OAT discontinuation in Australia are poorly understood. We examined post-release OAT discontinuation in a cohort of men who engaged in approximately monthly injecting drug use (IDU)...

Studies aimed at improving the health and well-being needs of people in prison are increasing in number. The ethical and logistical challenges of conducting this research, however, pose challenges for researchers which can limit its scope. Emerging literature provides insights into these challenges, but little is focused on the Australian perspecti...

Background: Longitudinal studies are critical to informing evolving responses to COVID-19 but can be hampered by attrition bias, which undermines their reliability for guiding policy and practice. We describe recruitment and retention in the Optimise Study, a longitudinal cohort and social networks study that aimed to inform public health and polic...

Aims: To estimate incidence of post-release injecting drug use (IDU) among men who injected drugs before imprisonment and determine factors associated with post-release IDU frequency. Design, setting, participants: Prospective cohort study of men reporting monthly IDU before a period of sentenced imprisonment in Victoria, Australia, recruited be...

Illicit drug use and mental illness are common among people in prison and are associated with higher rates of reoffending and reimprisonment. We conducted a systematic review, searching MEDLINE, Embase, and PsycINFO to January 10, 2022, for studies reporting criminal justice involvement following exposure to community mental health services among p...

Objective Rates of emergency department (ED) use are higher among people released from prison than in the general population. However, little is known about ED presentations specifically among people with a history of injecting drug use (IDU) leaving prison. We measured the incidence of ED presentation in the three months following release from pri...

Introduction Vaccine acceptability is a key determinant of vaccination uptake. Despite being at risk of adverse outcomes from coronavirus-19 disease (COVID-19), COVID-19 vaccine acceptability among people who inject drugs is unknown. We surveyed people who inject drugs in Melbourne, Australia to assess potential uptake of COVID-19 vaccines prior to...

Background Community reintegration from prison is typically stressful, with several health and social outcomes impacting psychiatric well-being during this time, often exacerbated among individuals with histories of drug use. Longitudinal data was used to assess change in psychiatric well-being over 2 years following release from prison among men w...

Background There are significant challenges associated with studies of people released from custodial settings, including loss to follow-up in the community. Interpretation of findings with consideration of differences between those followed up and those not followed up is critical in the development of evidence-informed policies and practices. We...

Background People who inject drugs are overrepresented in prison and have diverse and complex health needs. However, outcomes after release from prison are poorly understood, limiting effective interventions supporting community reintegration. We describe the prevalence of socio-demographics, physical and mental health, alcohol and other drug use,...

Background There are significant challenges associated with studies of people released from custodial settings, including loss to follow-up in the community. Interpretation of findings with consideration of differences between those followed up and those not followed up is critical in the development of evidence-informed policies and practices. We...

Background: People in prison experience higher rates of mental illness than the general community, and commonly have cooccurring histories of drug dependence. While patterns of mental health service contacts following prison release have been extensively described, limited research has explored histories of service contacts prior to adult imprisonm...

Objective: Ketamine is a dissociative anesthetic used in medical practice, used recreationally since the mid-1960s. This study describes trends in ketamine use in sentinel cross-sectional samples of Australians who regularly use illicit stimulants, along with characteristics of consumers. Method: Data on trends in recent ketamine use (i.e., use...

Background: Histories of self-harm and suicide attempts are common among people in prison in Australia, and substance dependence is an established risk factor for these lifetime experiences. We describe the prevalence of self-reported history of non-suicidal self-injury (NSSI) and suicide attempts in a cohort of men with recent histories of inject...