Consensus statements on adherence issues in schizophrenia for Hong Kong

Treatment adherence rates across different psychiatric disorders and settings: findings from a large patient cohort

Approximately 50% of patients with psychiatric disorders do not fully adhere to the prescribed psychopharmacological therapy, significantly impacting the progression of the disorder and the patient's quality of life. The present study aimed to assess potential differences in terms of rates and clinical features of treatment adherence in a large cohort of psychiatric patients with different diagnoses attending various psychiatric services. The study included 307 psychiatric patients diagnosed with a primary major depressive disorder, bipolar disorder, anxiety disorder, schizophrenic spectrum disorder, or personality disorder. Patient's adherence to treatment was evaluated using the Clinician Rating Scale, with a cutoff of at least five defining adherence subgroups. One-third of the sample reported poor medication adherence. A lower rate of adherence emerged among patients with schizophrenic spectrum disorder and bipolar disorder. Subjects with poor adherence were more frequently inpatients and showed higher current substance use, a greater number of previous hospitalizations, and more severe scores at psychopathological assessment compared with patients with positive adherence. Poor adherence was associated with symptom severity and increased rates of relapses and rehospitalizations. In addition, substance use appears to be an unfavorable transdiagnostic factor for treatment adherence.

Achieving better outcomes for schizophrenia patients in Hong Kong: Strategies for improving treatment adherence

Recent research on second-generation long-acting injectable antipsychotics (LAI SGAs) has proven its effectiveness in minimizing medication nonadherence problem and reducing relapses. Administered by medical professionals, making quick detection of nonadherence possible, long-acting injectable antipsychotics (LAIs) facilitate immediate intervention and recovery process, and thus are favored by psychiatrists. Despite a higher initial cost with LAIs, the subsequent schizophrenia-related health costs for hospitalizations and outpatients are greatly reduced. With reference to guidelines published by psychiatric associations around the globe, this article looks at scenarios in Hong Kong on the management of severe mentally ill patients with regard to the use of a host of psychosocial interventions as well as LAI SGAs as a preferable treatment. In particular, it examines the benefits of using LAI SGAs for Hong Kong patients who demonstrated high nonadherence treatment rates due to their social environment. It assesses the rationale behind the early usages of LAI SGAs, which help to provide better recovery outcomes for patients.

Guidance on the clinical understanding and use of long-acting injectable antipsychotics in Schizophrenia: Hong Kong Consensus Statements

AIMS

There is increasing evidence showing the importance of long-acting injectable antipsychotics in the management of schizophrenia, especially in terms of improving patient medication compliance. A panel of experienced clinicians in Hong Kong mapped out a set of consensus statements with an aim to facilitate the understanding and use of long-acting injectable antipsychotics among local physicians.

METHODS

Eight discussion areas regarding long-acting injectable antipsychotics were selected by the chairman of the consensus group. A series of meetings were held for the panelists to discuss the published literature and their clinical experience, followed by the drafting of consensus statements. At the final meeting, each consensus statement was voted on anonymously by all members based on its practicability of recommendation in Hong Kong.

RESULTS

A total of 12 consensus statements on the rational use of long-acting injectable antipsychotics were established and accepted by the consensus group.

CONCLUSION

The consensus statements aim to provide practical guidance for Hong Kong physicians on the use of long-acting injectable antipsychotics in schizophrenia patients. These statements may also serve as a reference for doctors in other parts of the Asia-Pacific region.

Reliability and validity of the Medication Adherence Rating Scale in a cohort of patients with schizophrenia from Nigeria

INTRODUCTION

Assessing adherence in schizophrenia facilitates interventions that optimize outcomes. Adherence rating questionnaires are feasible and non-intrusive; however, no validated measure exists in sub-Saharan Africa. We aimed to assess the psychometric properties of the 10-item Medication Adherence Rating Scale (MARS).

METHODS

This was a cross-sectional study of a cohort of patients with schizophrenia (n=230). A sociodemographic questionnaire, the Mini International Neuropsychiatric Interview (MINI), Positive and Negative Syndrome Scale (PANSS), Scale for the Unawareness of Mental Disorder (SUMD) and the MARS were all administered by an interviewer.

RESULTS

The MARS demonstrated good reliability (Cronbach's alpha: 0.76). The scale was reducible to a 3-factor construct (1 - medication adherence behavior, 2 - attitude to taking medications, and 3 - negative side effects and attitude to psychotropics), with significant though weak external validity in relation to psychopathology (p<0.001) and insight (p<0.001). The first factor showed good internal consistency (α=0.80), comprising six items that could serve as a reliable proxy measure of adherence in place of the MARS.

CONCLUSION

The MARS demonstrated fair psychometric characteristics in assessing adherence in patients with schizophrenia in this cohort. The scale may be useful in the dimensional assessment of medication adherence for schizophrenia in sub-Saharan African settings.