A screening method for sleep disturbances at the end-of-life
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2020
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Cambridge University Press
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Ibáñez del Prado C, Cruzado JA (2020). A screening method for sleep disturbances at the end-of-life. Palliative and Supportive Care 18, 468–472. https://doi.org/ 10.1017/S1478951520000024
Abstract
Objective. To evaluate sleep disturbances and to verify the accuracy of three screening tests to detect them in patients at the end-of-life admitted in a hospital palliative care unit. Method. The level of sleep disturbances was evaluated through the Pittsburgh Sleep Quality Index (PSQI) in 150 palliative patients. This questionnaire was the criterion variable for testing the three screening tests used: Edmonton Symptom Assessment System (ESAS-Sleep subscale);
the single question “How much do you worry about your sleep problems?” which is answered on a scale of 0–10 (Sleep-Worry-Q) and another single question: “Do you think you have sleep problems?” with two response categories, Yes/No (Sleep-Problem-Q). Results. According to the PSQI (cut-off point: 8), 87% of patients presented sleep disturbances. The ESAS-Sleep (cut-off point: 3) showed a sensitivity of 0.87, a specificity of 0.58, and an AUC of 0.729; the Sleep-Worry-Q (cut-off point: 4) showed a sensitivity of 0.95, a specificity of 0.68, and an AUC of 0.854; the Sleep-Problem-Q obtained a sensitivity of 0.92 and a specificity of 0.65. Significance of results. Patients at the end-of-life, near the time of death, have high levels of sleep disturbances that can be detected early, with better diagnostic accuracy, with the Sleep-Worry-Q. Although from a clinical point of view, the application of the Sleep- Problem-Q may be more advantageous, as it presents good diagnostic accuracy, greater simplicity, and brevity.