Experiences of antipsychotic use in patients with early psychosis: a two-year follow-up study

Background: Non-adherence is a major public health problem despite treatment advances. Poor drug adherence in patients with psychosis is associated with more frequent relapse, re-hospitalization, increased consumption of health services and poor outcomes on a variety of measures. Adherence rate in patients with first episode psychosis have been found to vary from 40 to 60%. However, most previous studies have addressed the consequences of non-adherence rather than its potential causes. The purpose of this study was, therefore, to investigate experiential factors which may affect adherence to medication in adults with psychotic disorders, during the 24-month period after the onset of treatment. Methods: Twenty first episode patients (7 male, 13 female) were included in our qualitative sub-study from the ongoing TIPS2 (Early Intervention in Psychosis study). Each person participated in semi-structured interviews at 2-year follow-up. All had used antipsychotics, with some still using them. Data were analyzed within an interpretative-phenomenological framework using an established meaning condensation procedure. Results: The textual analysis revealed four main themes that affected adherence largely: 1) Positive experiences of admission, 2) Sufficient timely information, 3) Shared decision-making and 4) Changed attitudes to antipsychotics due to their beneficial effects and improved insight into illness. Conclusion: Patients reported several factors to have a prominent impact on adherence to their antipsychotics. The patients do not independently choose to jeopardize their medication regime. Health care staff play an important role in maintaining good adherence by being empathetic and supportive in the admission phase, giving tailored information according to patients' condition and involving patients when making treatment decisions.