Evaluation of antipsychotic medication adherence and its relation to negative and positive psychiatric symptoms

The aim of this study was to assess antipsychotic medication adherence and its relation to Psychiatric symptoms in a sample of patients with schizophrenia in Palestine. Patients were recruited from the governmental psychiatry clinic in Ramallah in a cross-sectional study. The self-reported Morisky–Green–Levine (MGL) scale was used to measure patients’ adherence. Psychiatric symptoms were measured using the expanded Brief Psychiatric Rating Scale (BPRS-E). Of the 130 participants in the study, 78 (60%) were men and mean age was 41.8 ± 9.8 years 70 (53.8%). of the sample participants were classified as low-adherent while 60 (46.2%) of patients classified as high adherent. That negative symptom scores of high adherence group are significantly lower than low adherence group (12.5 vs. 15.0, P = 0.002) and lower depression anxiety scores (18.3 vs. 22.1, P < 0.001) indicated that high adherence group had lower depression, anxiety, social isolation, anxiety and suicidal ideation symptoms than low-adherence group. The multivariate regression model demonstrated that four variables remain significant and associated with nonadherence; no formal education (OR = 2.11; CI: 0.8–3.8; P = 0.04), age (OR = 2.88; CI: 1.2–4.4; P = 0.01), having comorbidity (OR = 3.2; CI: 1.9–4.3; P = 0.01) and having higher negative symptoms scores (OR = 2.5; CI: 1.2–3.9; P = 0.03); as they are positively correlated to nonadherence. Medication nonadherence was significant, and it was linked to poor psychiatric outcomes and adherence scores were unaffected by medication-related variables.