Perception of depot antipsychotics by mental health professionals

Early use of long-acting injectable antipsychotics in bipolar disorder type I: An expert consensus

INTRODUCTION

Long-acting injectable antipsychotics (LAIs) are not routinely offered to patients living with bipolar disorder type I (BP-I), despite widespread evidence that supports their benefits over oral antipsychotics, particularly in early disease.

METHODS

A round-table meeting of psychiatrists convened to discuss barriers and opportunities and provide consensus recommendations around the early use of LAIs for BP-I.

RESULTS

LAIs are rarely prescribed to treat BP-I unless a patient has severe symptoms, sub-optimal adherence to oral antipsychotics, or has experienced multiple relapses. Beyond country-specific accessibility issues (e.g., healthcare infrastructure and availability/approval status), primary barriers to the effective use of LAIs were identified as attitudinal and knowledge/experience-based. Direct discussions between healthcare providers and patients about treatment preferences may not occur due to a preconceived notion that patients prefer oral antipsychotics. Moreover, as LAIs have historically been limited to the treatment of schizophrenia and the most severe cases of BP-I, healthcare providers might be unaware of the benefits LAIs provide in the overall management of BP-I. Improved treatment adherence associated with LAIs compared to oral antipsychotics may support improved outcomes for patients (e.g., reduced relapse and hospitalization). Involvement of all stakeholders (healthcare providers, patients, and their supporters) participating in the patient journey is critical in early and shared decision-making processes. Clinical and database studies could potentially bridge knowledge gaps to facilitate acceptance of LAIs.

CONCLUSION

This review discusses the benefits of LAIs in the management of BP-I and identifies barriers to use, while providing expert consensus recommendations for potential solutions to support informed treatment decision-making.

Objective and subjective benefits of a psychiatric pharmacist-led long-acting injectable medication training at a large, multisite organization

Introduction

Many psychiatric, long-acting injectable (LAI) medications are available, and each product comes with its own unique challenges. Improper administration can lead to pain, decreased efficacy, and loss of trust in the patient-provider relationship. This study was conducted to determine if a pharmacist-led, 1-hour training was successful in increasing psychiatric LAI medication knowledge through a pretest and posttest. The study also assessed staff satisfaction, confidence, and relevance to practice through a feedback questionnaire.

Methods

Four 1-hour live trainings took place in November 2019. Thirty-five nurses and 8 medical assistants attended 1 of the trainings. A pretest and posttest was administered to determine the training's efficacy, and then a final assessment was administered 4 to 6 weeks after the training. Additionally, a participant feedback questionnaire was given to determine the perceived benefits of the training.

Results

The primary outcome was to compare pretest and posttest scores. The pretest average score was 67%, the posttest average score was 97%, and the average score 4 to 6 weeks after the training was 97%. The secondary outcome was to review feedback questionnaires to determine the perceived benefit and effectiveness of the training. Ninety-five percent of participants selected that they were very satisfied with the training, 88% selected they would definitely use the information presented in their work, and 93% selected that they had a lot of confidence in the topic after the training.

Discussion

A psychiatric LAI medication training administered to nursing staff and medical assistants improved knowledge scores and was perceived as being useful.

Focused Ethnographic Examination of Barriers to Use of Long-Acting Injectable Antipsychotics

OBJECTIVE

The authors designed this project to identify barriers to using long-acting formulations of antipsychotics.

METHODS

The authors used a focused ethnographic approach. Patients, psychiatrists, nurses, therapists and administrators were interviewed about barriers to use of long-acting injectable (LAI) antipsychotics at six facilities in New York State, as were representatives from insurance firms, a pharmaceutical company, and a national professional organization. Interviews were conducted and analyzed by a central team not affiliated with the institutions.

RESULTS

Interviews were obtained with 23 patients, 16 psychiatrists, three nurses, 23 therapists, 14 administrators, four insurers, one representative from a pharmaceutical industry, and one representative from a national organization. Major barriers identified from the interviews included restricting discussions about LAI medication to only patients with nonadherence or repeated hospitalizations; inadequate education efforts with patients about LAI antipsychotics; inadequate support for patients making medication decisions; lack of communication within the treatment team about issues relevant to use of LAI formulations by patients; therapists' limited knowledge about LAI antipsychotics, which restricted their role in supporting patients making treatment decisions; psychiatrist concerns about the pharmacologic properties of LAI formulations; lack of clinic infrastructure to support LAI prescriptions; and payer concerns about whether the immediate costs of LAI administration would translate into later potential cost benefits.

CONCLUSIONS

Effective shared decision making about use of LAI antipsychotics requires that patients receive accurate information and support for their decision making. The training needs and administrative support requirements of all team members should be considered to provide patients with the information and support required.

Reducing long acting antipsychotic injection dosage frequency: A pilot study in a community mental health team

BACKGROUND

Antipsychotic long acting injections (LAI) allow a range of dosage intervals to be administered. Short intervals can be inconvenient for patients and staff. There are few clinical reasons for using them yet this is common practice.

AIMS

This study aimed to examine the feasibility of reducing LAI frequency with service user consent.

METHODS

The study took place in a community mental health team in the north of England. A specialist mental health pharmacist reviewed records of all service users on LAI and drew up an action plan. Each service user then met with the consultant psychiatrist for medication review.

RESULT

Nineteen out of thirty service users on LAI had intervals less than the maximum licensed. The frequency was reduced in eight cases. After 6 months follow-up, there was no deterioration in symptoms. In nine cases, antipsychotic doses were also reduced as a result of the review.

CONCLUSION

Where a service user is prescribed a LAI with a short dosage interval consideration should be given to increase the interval. This can free up service user and staff time. A medication focused review can also lead to other benefits such as dosage reduction.

Positive views on antipsychotic long-acting injections: results of a survey of community patients prescribed antipsychotics

BACKGROUND

We aimed to assess patients' views about antipsychotic long-acting injections (LAIs).

METHODS

We interviewed patients prescribed an antipsychotic (oral or LAI) in our community teams. In a subanalysis, responses were analysed for differences between patients currently receiving an LAI and those prescribed only oral medication.

RESULTS

In total, 226 patients (57%) completed the study questionnaire. The majority agreed that LAIs ensured delivery of the right amount of medication and protection against hospital admissions (57% and 60%, respectively). A minority of participants were more concerned than not about the use of a needle (46%), pain from injection (48%) and the need to travel to receive the injection (34%). A majority expressed a preference for injection site (deltoid or gluteal) (65%) and clinic location (69%). A higher proportion of patients currently receiving an LAI compared with those prescribed oral medication thought an LAI was beneficial because this formulation obviated the need to: swallow tablets (63% versus 41%; p = 0.0013), remember to take tablets daily (75% versus 51%; p = 0.0004), remember tablets when away from home (72% versus 49%; p = 0008). Current LAI users were more likely than those on oral treatment to agree that LAIs keep patients out of hospital (76% versus 44%; p = 0.0001) and that the injection ensured delivery of the right amount of medication (71% versus 44%; p = 0.0002). Women were more likely than men to prefer administration by a clinician of the same gender (34% versus 12%; p = 0.0001).

CONCLUSIONS

In our study, a greater proportion of patients prescribed an LAI regarded LAIs as beneficial compared with those on oral medication.

Why aren't depot antipsychotics prescribed more often and what can be done about it?

Long-acting depot antipsychotics were developed specifically to promote treatment adherence (compliance) and they are a valuable option for patients requiring maintenance medication for schizophrenia. Depot use has fallen in recent years, perhaps owing to the introduction of oral atypical antipsychotics. Psychiatrist and patient acceptance of depot medication is variable. The depot formulation and the traditional ‘depot clinic’ seem to have an image problem, although many patients already receiving depot medication like it. Some psychiatrists may not adequately consider the risks and benefits when contemplating prescribing depot medication. Further, public opinion and planning forces in psychiatric health services may have a negative influence on the use of long-acting treatments. This review considers possible reasons for underutilisation of depot antipsychotics in maintenance treatment of schizophrenia and highlights the potential benefits and future role of depot drugs.

Antipsychotic therapeutic drug monitoring: psychiatrists' attitudes and factors predicting likely future use

BACKGROUND

This study aimed to explore predictive factors for future use of therapeutic drug monitoring (TDM) and to further examine psychiatrists' current prescribing practices and perspectives regarding antipsychotic TDM using plasma concentrations.

METHOD

A cross-sectional study for consultant psychiatrists using a postal questionnaire was conducted in north-west England. Data were combined with those of a previous London-based study and principal axis factor analysis was conducted to identify predictors of future use of TDM.

RESULTS

Most of the 181 participants (82.9%, 95% confidence interval 76.7-87.7%) agreed that 'if TDM for antipsychotics were readily available, I would use it'. Factor analysis identified five factors from the original 35 items regarding TDM. Four of the factors significantly predicted likely future use of antipsychotic TDM and together explained 40% of the variance in a multivariate linear regression model. Likely future use increased with positive attitudes and expectations, and decreased with potential barriers, negative attitudes and negative expectations. Scientific perspectives of TDM and psychiatrist characteristics were not significant predictors.

CONCLUSION

Most senior psychiatrists indicated that they would use antipsychotic TDM if available. However, psychiatrists' attitudes and expectations and the potential barriers need to be addressed, in addition to the scientific evidence, before widespread use of antipsychotic TDM is likely in clinical practice.

A qualitative study of experiences with and perceptions regarding long-acting injectable antipsychotics: part II-physician perspectives

OBJECTIVE

In many countries, including Canada, a small proportion of people with psychotic disorders receive long-acting injectable (LAI) antipsychotics (APs), despite their demonstrated effectiveness and possible advantages for improving adherence rates. Attitudes regarding LAIs among physicians may influence their prescribing practices and thereby contribute to the underuse of LAIs. Here, we report on a qualitative study of perceptions and attitudes toward LAIs among psychiatrists in Canada.

METHOD

Focus groups were conducted with 24 psychiatrists in 4 Canadian provinces. The focus groups inquired about experiences with and attitudes toward LAI APs. The sessions were audiotaped and transcribed verbatim, and transcripts were coded using a hybrid process of deductive and inductive methods. A brief pre-focus group questionnaire was administered.

RESULTS

The pre-focus group questionnaires indicated that psychiatrists in our study prescribed the oral formulation of APs most of the time and had limited experience with LAIs. The focus groups yielded 4 main themes: limited knowledge about and experience with LAIs; attitudes toward LAIs (beliefs about negative perceptions of patients regarding LAIs, personal bias against needles, and consensus about some advantages of LAIs); prescribing practices around LAIs (generally seen as a last-resort option for patients with a history of nonadherence); and pragmatic barriers to using LAIs (for example, cost, storage, and staffing).

CONCLUSION

Several factors may be contributing to the underuse of LAIs and the continuing stigmatized and coercive image of LAIs. Psychiatrists may benefit from better education about LAIs, and from self-examination of their attitudes to LAIs and their prescribing practices.

Delivery systems and dosing for antipsychotics

Schizophrenia is a devastating illness, affecting approximately 1-2 % of the world population. Age of onset is generally between 20 and 30 years of age with a chronic, unremitting course for the duration of the patient's life. Although schizophrenia is among the most severe and debilitating illnesses known to medicine, its treatment has remained virtually unchanged for over 50 years. This chapter covers several major concepts in experimental drug development and delivery: (1) the concept of "typical" vs. "atypical" classifications for antipsychotic drugs as it relates to dosing; (2) the development of depot formulations for improved medication adherence; and (3) several promising areas for future therapeutic advances related to the methods and duration of drug administration. These areas include sublingual, injectable, and implantable drug delivery strategies that have the potential to effect rapid and dramatic improvements in schizophrenia outcomes.

Barriers to, and strategies for, starting a long acting injection clinic in a community mental health center

As many as 50% of patients with schizophrenia do not take oral antipsychotic medications as prescribed, yet long acting injections are rarely utilized. Community agencies that serve this population are often over-burdened and poorly funded. There are negative attitudes on the part of both physicians and consumers about injections. Transportation and logistics are often problematic. We describe the unique opportunity provided by the need for bi-weekly or monthly injections to establish a recovery-oriented group around injection visits. Our approach discusses methods and resources to help overcome some of the common barriers by establishing advocates within the agency, establishing necessary infrastructure, providing education for consumers, providers, and staff, sharing information about successful outcomes with clinic staff and working through billing issues. We also recommend public advocacy on the part of the clinic and consumers to work with state funding sources to change regulations that may limit appropriate clinical care.

Patient and Health Care Provider Perspectives on Long Acting Injectable Antipsychotics in Schizophrenia and the Introduction of Olanzapine Long-Acting Injection

Olanzapine long acting injection has joined risperidone and paliperidone as the second generation long acting antipsychotic injection options for treatment of patients with schizophrenia. Long acting injections are important alternatives to oral medications for patients who have difficulty adhering to daily or multiple daily medication administrations, yet may be underutilized or not well understood. Patient perceptions, adherence, and preferences are important issues for health care providers to address when discussing treatment options with their patients. Reviewed here are overall patient and health care provider attitudes and perceptions regarding long acting injections and the details of olanzapine long acting injectable, the newest agent, and how it will fit in the marketplace. In addition, efficacy, safety, dosing and use data regarding this newest long acting agent are reviewed and compared to other available long acting agents.

A Case of Treatment Resistant Depression and Alcohol Abuse in a Person with Mental Retardation: Response to Aripiprazole and Fluvoxamine Therapy upon Consideration of a Bipolar Diathesis after Repetitive Failure to Respond to Multiple Antidepressant Trials

Mental Retardation (MR) is a developmental disability characterized by impairments in adaptive daily life skills and difficulties in social and interpersonal functioning. Since multiple causes may contribute to MR, associated clinical pictures may vary accordingly. Nevertheless, when psychiatric disorders as Treatment Resistant Depression (TRD) and/or alcohol abuse co-exist, their proper detection and management is often troublesome, essentially due to a limited vocabulary MR people could use to describe their symptoms, feelings and concerns, and the lack of reliable screening tools. Furthermore, MR people are among the most medicated subjects, with (over) prescription of antidepressants and/or typical antipsychotics being the rule rather than exception. Thus, treatment resistance or even worsening of depression, constitute frequent occurrences. This report describes the case of a person with MR who failed to respond to repetitive trials of antidepressant monotherapies, finally recovering using aripiprazole to fluvoxamine augmentation upon consideration of a putative bipolar diathesis for “agitated” TRD. Although further controlled investigations are needed to assess a putative bipolar diathesis in some cases of MR associated to TRD, prudence is advised in the long-term prescription of antidepressant monotherapies in such conditions.

Clinical outcomes of long-acting injectable risperidone in patients with schizophrenia: six-month follow-up from the Electronic Schizophrenia Treatment Adherence Registry in Latin America

BACKGROUND

Risperidone long-acting injection (RLAI) has been shown to be efficacious, improve compliance, and increase long-term retention rate on therapy. The aim of this work was to determine the effect of RLAI on clinical outcome and hospitalization rate in patients with schizophrenia or schizoaffective disorder enrolled in the electronic Schizophrenia Treatment Adherence Registry in Latin America.

METHODS

Data were collected at baseline, retrospectively for the 12 months prior to baseline, and prospectively every three months for 24 months. Hospitalization prior to therapy was assessed by a retrospective chart review. Efficacy and functioning were evaluated using Clinical Global Impression of Illness Severity (CGI-S), Personal and Social Performance (PSP), and Global Assessment of Functioning (GAF) scores. Relapse and treatment were also registered.

RESULTS

Patients were recruited in Mexico (n = 53), Brazil (n = 11), and Colombia (n = 15). Sixty-five percent (n = 52) were male, and mean age was 32.9 years. Patients were classified as having schizophrenia (n = 73) or schizoaffective disorder (n = 6). The mean dose of RLAI at six months was 34.1 mg (standard deviation = 10.2 mg). The percentage of hospitalized patients before treatment was 28.2% and 5.1% at six months after initiating RLAI (P < 0.001). Significant changes were registered on CGI-S, GAF, and PSP scores.

CONCLUSIONS

RLAI was associated with an improvement in clinical symptoms and functioning, and a greater reduction in hospitalization.

Psychiatrists' use, knowledge and attitudes to first- and second-generation antipsychotic long-acting injections: comparisons over 5 years

Psychiatrists' attitudes and knowledge about antipsychotic long-acting injections (LAIs) are important given the increasing emphasis on patient choice in treatment and the availability of second-generation antipsychotic (SGA) LAIs. A cross-sectional study of consultant psychiatrists' attitudes and knowledge in North West England was carried out. A pre-existing questionnaire on clinicians' attitudes and knowledge regarding LAIs was updated. Of 102 participants, 50% reported a decrease in their use of LAIs. LAI prescribing was evenly split between first-generation antipsychotic (FGA) and SGA-LAIs. Most regarded LAIs as associated with better adherence (89%) than tablets. A substantial proportion believed that LAIs could not be used in first-episode psychosis (38%) and that patients always preferred tablets (33%). Compared with a previous sample, the current participants scored more favourably on a patient-centred attitude subscale (60.4% vs 63.5%, P = 0.034) and significantly fewer regarded LAIs as being stigmatising and old-fashioned. Reported LAI prescribing rates have decreased in the last 5 years despite an SGA-LAI becoming available and most clinicians regarding LAIs as effective. Most attitudes and knowledge have remained stable although concerns about stigma with LAI use have decreased. Concerns about patient acceptance continue as do negative views about some aspects of LAI use; these may compromise medication choices offered to patients.

Attitudes of patients and mental health staff to antipsychotic long-acting injections: systematic review

BACKGROUND

The attitudes of staff and patients have been demonstrated to influence the acceptance of long-acting injections (LAIs) or depot antipsychotics.

AIMS

To examine the attitudes of patients and staff to LAIs.

METHOD

A systematic review was carried out. Studies included contained quantitative data for attitudes of patients or staff to LAIs.

RESULTS

Twelve studies published subsequent to the systematic review reported in 2001 were identified. Five studies conveyed an overall positive attitude. The most positive attitudes among patients were seen in those already prescribed an LAI. Positive attitudes of staff correlated closely with the extent of their knowledge of LAIs.

CONCLUSIONS

Long-acting injections continue to have an image problem, arguably perpetuated by manufacturers of oral second-generation antipsychotic drugs, and exacerbated by the predominant use of these medications as a ;last resort' often for the most stigmatized individuals. The introduction of better-tolerated LAIs and better education of both staff and patients may encourage individuals to re-examine their attitudes.

Health professionals' attitudes to depot injection antipsychotic medication: a systematic review

Healthcare professionals are key providers of information about antipsychotic medication and may have a significant influence on the decisions that service users make about how their medication is delivered. This systematic review aimed to explore health professionals' attitudes and beliefs towards antipsychotic depot medication. A systematic search of AMED, BNI, CINAHL, EMBASE, HEALTH BUSINESS ELITE, HMIC, MEDLINE and PsycINFO was carried out, as well as hand searches of journals and citation searches. Studies were selected if the terms 'attitudes/beliefs' and 'depot/injection' were included in the title or abstract, if health professionals were participants in the study and if original data were included. The search strategy produced 131 papers. Eight relevant studies were then selected for the review. They included six cross-sectional surveys and two qualitative studies. It was shown that the research carried out is still very sparse. Depots are seen as old fashioned, stigmatizing, causingside effects and being costly, and they are often not prescribed because of a presumed adherence to oral medication. More research needs to be carried out to further explore these issues, to look at the role of non-medical prescribers and explore the relationship between health professionals' attitudes and those of service users.

Attitudes towards long-acting depot antipsychotics: a survey of patients, relatives and psychiatrists

In many countries fewer than 20% of individuals with schizophrenia receive depot antipsychotic medication. Frequently stated reasons are psychiatrist's, patient's and relative's objections to depot treatment. This is the first study that directly compares the attitudes to depot antipsychotics of psychiatrists, patients and relatives. A semi-structured questionnaire about their attitudes towards depot antipsychotics was completed by 255 participants (83 patients diagnosed with schizophrenic disorder, 81 psychiatrists in private practice and 91 relatives, not directly related to the patients). Patients were more negative towards depot injections than psychiatrists and relatives. They particularly fear to be constricted in their autonomy when treated with depot antipsychotics and that injections might be painful. About 67% of all patients in our sample did not receive information about depot antipsychotics from their psychiatrist. Less than 10% of psychiatrists offer depot treatment after a first psychotic episode. Psychiatrists use depot antipsychotics in a conservative way, although they attribute positive traits to the method. Patients' negative attitudes might relate to the low level of information. To enhance the use of depot antipsychotics, information practices of psychiatrists should be improved. Patients should be informed about different forms of treatment during early stages of the illness.

Antipsychotic dosing and drug delivery

This chapter addresses the current state of affairs regarding proposed mechanism of action for antipsychotic medications and how this mechanism relates to dosing and delivery strategies. The initial portion describes the history of antipsychotic medication, including key discoveries that contribute to the dopamine hypothesis of schizophrenia and provide evidence that dopamine D2 receptor antagonism remains the most copasetic explanation for both determination of dose and degree of efficacy for current antipsychotic medications. Early observations regarding the unique properties of clozapine and how those observations led to the misconception and misnomer of atypicality are also discussed. Subsequent sections relate the dosing of available medications using chlorpromazine equivalents, with a discussion of non-D2-related mechanisms to antipsychotic effects. The balance of the chapter explores the temporal pattern of receptor occupancy as a key determinant of antipsychotic effectiveness, noting that continuous infusion would present the optimal method of treatment. In addition to the pharmacodynamic benefits of continuous long-term delivery systems, the incidence, causes, and clinical consequences of poor adherence are addressed. These observations are then discussed in the context of clinical studies and meta-analyses, demonstrating superiority of long-term depot preparations over oral administration. However, despite overwhelming evidence in favor of long-term delivery systems, few options are available to provide such ideal medication delivery profiles. Barriers to creating traditional depot preparations for a large number of antipsychotic agents, as well as efforts to address these limitations with polymer-based microspheres are described. The potential extension of current formulations to very long-term delivery implants using biodegradable and nonbiodegradable platforms is then described. Benefits as well as limitations of such systems are discussed with respect to clinical and ethical issues as well as a brief description of potential regulatory and logistic barriers to developing better delivery options. In summary, this chapter describes the basis for relating the dose of all existing antipsychotic medications to dopamine D2 receptor affinity and the potential contribution of continuous occupancy to enhanced efficacy through superior biological effects and improved adherence.

Psychiatric nurses' attitudes to antipsychotic depots in Hong Kong and comparison with London

Psychiatric nurses' attitudes to depots have only been explored in the UK. We conducted a cross-sectional attitudinal study for Hong Kong psychiatric nurses and also conducted international comparisons for nurses' views about depots. A pre-existing UK questionnaire on clinicians' attitudes and knowledge regarding depots was updated for the present study. Participants were 98 psychiatric nurses who attended an academic meeting. The majority of respondents had positive views regarding their role in depot administration; most reported that they had sufficient training (84%). However, many did not feel involved in treatment decision making (60%) and other negative views were expressed including: (1) most patients always prefer to have oral (vs. depot) (80%); and (2) force is sometimes required when administering a depot (40%). Interestingly, most reported that patients' friends and family were more accepting of depot (vs. oral) (69%). When compared with a former sample of London community psychiatric nurses, Hong Kong nurses had less favourable patient-focussed attitudes (mean 56% vs. 60%, P = 0.051) and depot-specific attitudes regarding depots (mean 63% vs. 69%, P < 0.001). In conclusion, therefore, international variation exists and encompasses clinical practice aspects for both the patient and the depot formulation per se. Our participants wanted more involvement in treatment decision making.

Self-management of medication for mental health problems by homeless young people

Youth homelessness is a growing Australian and international concern associated with considerable health disadvantage, including serious mental health problems. This paper reports findings of a qualitative study that explored young homeless people's experiences of mental health and well-being through in-depth interviews. Thematic analysis identified medication use and management as a central issue for the young people. Reasons identified for medication non-adherence included unwanted side-effects, issues of access and storage, and lack of support from health and social agencies. These problems were compounded by everyday stresses of homelessness. Medication adherence was facilitated by social support, consistent contact with supportive health services, and regular medication supply, often resulting in improved mental health and well-being. For these young people, prioritizing management of medication helped stabilize one aspect of their lives. Health professionals can play an important role in helping them achieving this goal.

Prognostic indicators for early discontinuation of risperidone long-acting injection

Although efficacy trials have been conducted on risperidone long-acting injection (RLAI), its most appropriate utilization in clinical practice remains unclear. This 6-month, follow-up study investigated prognostic indicators for early discontinuation of RLAI. Consecutive sampling was conducted for adult patients with a psychotic disorder commenced on RLAI, whose injection was dispensed by one of three South London psychiatric hospital pharmacies. Prescription data were collected prospectively and clinical data retrospectively. Eightly-one out of 88 (92.0%) eligible patients were included, of whom 29 (35.8%) had treatment refractoriness and 30 (37.0%) discontinued within 6 months. Patients with a preceding oral antipsychotic were more likely to discontinue RLAI than those with a preceding depot; treatment refractoriness weakly confounded this relationship [summary adjusted odds ratio (OR) 2.68, 95% confidence interval (CI) 0.95-7.53, P=0.061]. After adjusting for preceding antipsychotic type, patients with treatment refractoriness were no more likely to discontinue than those without (summary adjusted OR 1.55, 95% CI 0.59-4.11, P=0.376). Sociodemographic factors and other clinical factors were non-predictive of discontinuation. For this first wave of patients commenced on RLAI, many had treatment refractoriness. RLAI discontinuation is high early on but subsequently tapers off. Preceding antipsychotic type (depot versus oral) is a stronger prognostic indicator than treatment refractoriness for RLAI discontinuation.