Cost-Effectiveness and Guidelines for Opioid Substitution Treatment

There was evidence indicating that in the treatment of opioid use disorder, injectable hydromorphone, or injectable methadone provided more benefit at less cost compared with injectable diacetylmorphine over a 6-month time horizon. Evidence suggests that in the treatment of opioid use disorder, both injectable hydromorphone and injectable diacetylmorphine are likely to provide more benefit at less cost than methadone maintenance treatment. Treatment with injectable hydromorphone was more cost-effective than injectable diacetylmorphine in opioid use disorder patients who do not respond to or relapse from drug treatments. The evidence is limited because observed data were collected during a short-term follow-up, and long-term cost-effectiveness outcomes were based on extrapolations beyond data from the actual studies. One guideline provided a weak recommendation, supported by low-quality evidence, for using slow-release oral morphine in older adults with adequate renal function in whom buprenorphine and methadone maintenance have been ineffective to treat opioid use disorder or could not be tolerated. Another guideline recommends using injectable hydromorphone or injectable diacetylmorphine for individuals with severe opioid use disorders who relapsed previous treatments failed. No relevant cost-effectiveness evidence or guidelines with recommendations regarding the use of oral hydromorphone, fentanyl patches, or fentanyl buccal tablets for opioid use disorder treatment were identified; therefore, no summary can be provided.

Integrating Hepatitis C Care for opioid substitution treatment patients attending general practice: Feasibility, Clinical and Cost Effectiveness (Preprint)

BACKGROUND Hepatitis C (HCV) infection is common among people who inject drugs (PWID), yet well described barriers mean that a minority have accessed HCV treatment. OBJECTIVE The aim of this study was to examine feasibility, acceptability, clinical and cost effectiveness of an integrated model of HCV care for opioid substitution treatment (OST) patients in general practice. METHODS A pre-and-post intervention design with an embedded economic analysis was used to establish the feasibility, acceptability, clinical and cost effectiveness of a complex intervention to optimise HCV identification and linkage to HCV treatment among patients prescribed methadone in primary care. The ‘complex intervention’ comprised General Practitioner (GP) / practice staff education, nurse-led clinical support, and enhanced community-based HCV assessment of patients. General practices in North Dublin were recruited from the professional networks of the research team and from GPs who attended educational sessions. RESULTS Fourteen practices, 135 patients participated. Follow-up data was collected six-months post-intervention on 131(97.0%) patients. With regards to clinical effectiveness, among HCV antibody-positive patients, there was a significant increase in the proportions of who had a liver fibroscan (17/101(16.8%) vs 52/100 (52.0%); p<0.001), had attended hepatology/infectious diseases services (51/101(50.5%) vs 61/100 (61.0%); p=0.002), and initiated treatment (20/101(19.8%) vs 30/100 (30.0%); p=0.004). The mean incremental cost-effectiveness ratio of the intervention was €13,255 per quality adjusted life year gained at current full drug list price (€39,729 per course), which would be cost saving if these costs are reduced by 88%. CONCLUSIONS The complex intervention involving clinical support, access to assessment and practitioner education has the potential to enhance patient care, improving access to assessment and treatment in a cost effective manner.

Correlates of sharing of needles and syringes among people who inject drugs in Dhaka city, Bangladesh

Introduction: This paper examines the correlates of needle and syringe sharing among People Who Inject Drugs in Dhaka city, Bangladesh, which is currently experiencing a steep increase in HIV prevalence despite the ongoing presence of Needle Exchange Programs. Methodology: This was a retrospective chart review with cross-sectional design that extracted data from 783 male People Who Inject Drugs enrolled into five Opioid Substitution Treatment clinics in Dhaka city between April 2010 and January 2016. Data were retrieved from the program’s electronic database. Needle and syringe sharing constituted the borrowing or lending of needles and syringes from others within the past month preceding data collection. Results: Buprenorphine was the preferred injection drug and 44.6% shared needles and syringes within the past month. Multivariate analysis indicated that People Who Inject Drugs who were homeless (OR = 8.1, 95% CI = 1.4-44.9, p < 0.05), living with friends (OR = 6.8, 95% CI = 2.5-18.2, p < 0.001), injecting 2-3 times/day (OR = 4.8, 95% CI = 1.2-19.7, p < 0.05), injecting more than three times/day (OR = 4.8, 95% CI = 1.1-20.0, p < 0.05), not using condom with non-commercial female sex partners (OR = 3.3, 95% CI = 1.8-6.0, p < 0.05), bought sex from female sex workers (OR = 2.9, 95% CI = 1.0-8.3, p < 0.05), and did non-suicidal self-injury (OR = 1.8, 95% CI = 1.0-3.0, p < 0.05) were more likely to share needles and syringes. Conclusions: This study demonstrates that operating a standalone harm reduction approach that just provides sterile needles and syringes may not adequately curb needle and syringe sharing among People Who Inject Drugs.

Risk of PTSD Due to the COVID-19 Pandemic Among Patients in Opioid Substitution Treatment

Background: The impact of the COVID-19 pandemic on the mental health of patients suffering from addictive disorders is of major concern. This study aimed to explore the presence and potential increase in post-traumatic stress disorder (PTSD) symptoms, depression, and anxiety since the beginning of the pandemic for patients in opioid substitution therapy (OST).Methods: This cross-sectional survey study evaluated a clinical sample of patients in OST (N = 123). Symptoms of post-traumatic stress disorder (PTSD) due to the COVID-19 pandemic were assessed by an adapted version of the impact of event scale (IES-R), resulting in two subgroups of low and high risk for PTSD. The depression, anxiety, and stress scale (DASS-21) was applied to collect data on the respective symptoms, and changes since the onset of the pandemic were reported on separate scales. Sociodemographic and COVID-19 related factors, as well as data on craving, consumption patterns, concomitant use, and the drug market were further assessed.Results: A binary logistic regression analysis confirmed the impact of self-perceived higher burden by psychological and economic factors on the elevated risk for PTSD due to the pandemic. The high-risk PTSD group also showed higher levels of depression, anxiety and stress, as well as a more pronounced deterioration in these symptoms since the pandemic. While reported levels of craving did not differ between the two groups, the high-risk PTSD group indicated a significantly higher increase in craving since the crisis, when compared to the low-risk group.Discussion: Our findings demonstrate elevated levels of clinical symptoms among patients in OST, with more than a quarter of patients found at risk for PTSD due to the COVID-19 pandemic. Furthermore, about 30–50% of our patients reported concerning levels of depression, anxiety, or stress. Special attention should be drawn to these findings, and potential deterioration of the situation should be addressed by health care facilities. Particularly, psychological, and financial burden due to the crisis were identified as factors increasing the risk for PTSD. These factors can easily be evaluated during routine anamneses, and might be a valuable source of information, when special attention is needed.

Healthcare Seeking Among Swedish Patients in Opioid Substitution Treatment – a Mixed Methods Study on Barriers and Facilitators

Background: Patients in opioid substitution treatment (OST) have poorer health than the general population. Thus, they do not seek somatic health care to the extent that is medically motivated. Barriers hindering patients from seeking medical help through the conventional healthcare system result in a high degree of unmet healthcare needs. Barriers to and facilitators of OST patients’ healthcare seeking have been sparsely examined.Methods: Mixed methods were employed. The quantitative part consisted of a cross-sectional questionnaire covering questions on physical health, healthcare seeking, and barriers thereof, which was collected from 209 patients in OST. A sub-sample of eleven OST patients participated in semi-structured interviews, for the qualitative part of the study, covering experience of healthcare, lifestyle and self-images, expectations and ideals of Swedish healthcare. Results: Confirmed by qualitative data, quantitative data revealed deprioritization, fear of stigma and of being treated badly, and problems in navigation throughout the healthcare system, leading to unsuccessful establishment of contact, being most common reasons for not seeking somatic healthcare. Thus, interviewees provided a deeper knowledge of the barriers stigma, lack of means to prioritize health and difficulties navigating throughout the healthcare system, leading to resignation and deprioritization. On-site primary healthcare seemed to contribute to increased access and utilization of healthcare.Conclusion: Individual and structural barriers decreasing access to healthcare lead to increased inequalities in healthcare utilization, adding to an already deteriorating health of this ageing population. Integration of on-site primary healthcare and OST could provide acceptable and accessible healthcare. Further investigations into this subject need to be conducted.

Model of Care for Microelimination of Hepatitis C Virus Infection among People Who Inject Drugs

Background: People who inject drugs (PWID) are the largest group at risk for HCV infection. Despite the direct acting antivirals (DAA) advancements, HCV elimination has been hindered by real-life difficulties in PWID. Aims: This study aimed to assess the impact of a multidisciplinary intervention strategy where HCV screening, treatment and follow-up were performed at the same location on efficacy and safety of DAA-therapy in real-life PWID population. Methods: All HCV-infected PWID referred to five specialized outpatient centers for drug addicts (SerDs) in Northern Italy were prospectively enrolled from May 2015 to December 2019. Hepatologists and SerDs healthcare workers collaborated together in the management of PWID inside the SerDs. Sustained virologic response (SVR), safety of treatment, proportion of patients lost to follow-up and reinfection rate were evaluated. Results: A total of 358 PWID started antiviral treatment. About 50% of patients had advanced fibrosis/cirrhosis, 69% received opioid substitution treatment, and 20.7% self-reported recent injecting use. SVR was achieved in 338 (94.4%) patients. Two patients died during treatment; one prematurely discontinued, resulting in a non-responder; twelve were lost during treatment/follow-up; and five relapsed. No serious adverse events were reported. SVR was lower in recent PWID than in former ones (89.2% vs. 95.8%; p = 0.028). Seven reinfections were detected, equating to an incidence of 1.25/100 person-years. Reinfection was associated with recent drug use (OR 11.07, 95%CI 2.10–58.38; p = 0.005). Conclusion: Our embedded treatment model could be appropriate to increase the linkage to care of HCV-infected PWID. In this setting, DAA regimens are well tolerated and highly effective, achieving a lower rate of reinfection.

Methadone Contrasted with Acetaminophen Codeine plus Clonidine: An Inpatient Pilot Study

Introduction: The mainstay of pharmacological management of opioid dependence is opioid substitution treatment. Methadone is a long‐acting opioid agonist, which is used for detoxification and maintenance of opioid-dependent people. Objective: Objective of the present evaluation included a comparison between methadone and acetaminophen codeine plus clonidine for management of opioid withdrawal symptoms. Methods: All patients of an acute ward of a psychiatric hospital, who met dual diagnosis of primary psychiatric disorder plus opioid use disorder, were selected as accessible sample for the current evaluation. Duration of assessment was around elven months and the study was performed according to a single-blind plan. Among 96 patients, cases, who were using methadone, before their recent admission in hospital, continued their substitution treatment according to the recommended dosage and formulation till release (n = 42). The remaining group of patients, had been given acetaminophen codeine plus clonidine, as substitution treatment, during their inpatient management (n = 54). The primary outcome measures were the ‘Cross-Cutting Symptom Measure’ and the ‘Subjective Opiate Withdrawal Scale’, which were scored at baseline, week 1 and week 2. The study was performed according to the ‘per-protocol’ analysis, and the assessor was blind with respect to the said protocols. Results: while the mean total score of primary outcome measures decreased significantly in both groups, the between-group analysis did not show any significant difference between these two groups in a head-to-head analysis. Conclusion: Acetaminophen codeine plus clonidine was as good as methadone for management of opioid withdrawal symptoms in inpatient setting.

The state of harm reduction in prisons in 30 European countries with a focus on people who inject drugs and infectious diseases

Background People who inject drugs are often imprisoned, which is associated with increased levels of health risks including overdose and infectious diseases transmission, affecting not only people in prison but also the communities to which they return. This paper aims to give an up-to-date overview on availability, coverage and policy framework of prison-based harm reduction interventions in Europe. Methods Available data on selected harm reduction responses in prisons were compiled from international standardised data sources and combined with a questionnaire survey among 30 National Focal Points of the European Monitoring Centre for Drugs and Drug Addiction to determine the level of availability, estimated coverage and policy framework of the interventions. Results Information about responses to health harms in prisons is limited and heterogeneous. Cross-country comparability is hampered by diverging national data collection methods. Opioid substitution treatment (OST) is available in 29 countries, but coverage remains low (below 30% of people in need) in half of the responding countries. Needle and syringe programmes, lubricant distribution, counselling on safer injecting and tattooing/piercing are scarcely available. Testing for infectious diseases is offered but mostly upon prison entry, and uptake remains low in about half of the countries. While treatment of infections is mostly available and coverage is high for human immunodeficiency virus (HIV) and tuberculosis, hepatitis B and C treatment are less often provided. Health education as well as condom distribution is usually available, but provision remains low in nearly half of the countries. Post-release linkage to addiction care as well as to treatment of infections is available in a majority of countries, but implementation is often partial. Interventions recommended to be provided upon release, such as OST initiation, take-home naloxone and testing of infections, are rarely provided. While 21 countries address harm reduction in prison in national strategic documents, upon-release interventions appear only in 12. Conclusions Availability and coverage of harm reduction interventions in European prisons are limited, compared to the community. There is a gap between international recommendations and ‘on-paper’ availability of interventions and their actual implementation. Scaling up harm reduction in prison and throughcare can achieve important individual and public-health benefits.