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Treatment adherence and quality of sleep in schizophrenia outpatients
Pedro Afonso1, Sofia Brissos, Fernando Cañas
1Lisbon's Psychiatric Hospitalar Center , Lisbon , Portugal.
Objective:
Patients with schizophrenia (SZ) often present sleep complaints, and patients with sleep disturbances are at a greater risk for symptom worsening after antipsychotic discontinuation. Long-term adherence to antipsychotic treatment remains a challenge for clinicians, and the relationship between quality of sleep and treatment adherence in SZ outpatients has been poorly studied.
Methods:
In this cross-sectional, non-interventional study, 811 adult outpatients with a diagnosis of SZ were divided into two groups according to the presence (or absence) of sleep disturbances, and assessed using measures of symptom severity, quality and patterns of sleep, adherence/compliance to treatment, and family support degree.
Results:
Patients with sleep disturbances were significantly more symptomatic (p < 0.0001), and scored significantly higher on the Pittsburgh Sleep Quality Index (PSQI) as compared with patients without sleep disturbances (p < 0.0001). More compliant patients showed less sleep disturbances (p < 0.0001); moreover, patients with worse compliance to pharmacological treatment showed significantly higher scores on the PSQI (p < 0.0001). Regarding family support degree, patients with sleep disorders presented a lower family support (p = 0.0236), and patients with worse treatment adherence had worse family support (p < 0.0001).
Conclusions:
Our findings show that SZ outpatients reporting sleep disturbances show greater symptom severity, and worse adherence/compliance to treatment, as well as a lower family support.
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