• Thomas Hyphantis, Panagiota Goulia, Ioannis Zerdes, Solomis Solomou, Elias Andreoulakis, André F Carvalho, and Nicholas Pavlidis.
• Department of Psychiatry, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina, 45110, Greece. tyfantis@cc.uoi.gr.
• Dig. Dis. Sci. 2016 Jan 1; 61 (1): 273-82.

BackgroundSleep disturbances are common in cancer patients, but little is known about the complex interplay between the background psychological profile, coping with health stressors capacities and psychological distress in the formation of sleep difficulties in colorectal cancer.AimsTo study the course and to identify psychological predictors of sleep difficulties in early non-metastatic colorectal cancer patients over a one-year period.MethodsIn this 1-year prospective study, we assessed in 84 early non-metastatic colorectal cancer patients the association of psychological distress (SCL-90-R), sense of coherence (SOC-29), and defense styles (Defense Style Questionnaire) with sleep difficulties (SCL-90-R) in multiple regression models. Eighty-two patients with breast cancer and 50 patients with cancer of unknown primary site served as disease controls, and 84 matched for age and sex alleged healthy individuals served as healthy controls.ResultsColorectal cancer patients presented more sleep difficulties compared to healthy participants but fewer than patients with breast cancer and cancer of unknown primary site. Colorectal cancer patients' trouble falling asleep (p = 0.033) and wakening up early in the morning (p < 0.001) deteriorated over time. Sleep that was restless or disturbed was independently associated with low SOC (p = 0.046) and maladaptive defenses (p = 0.008). Anxiety symptoms (p < 0.001) predicted deterioration in trouble falling asleep, while depressive symptoms (p = 0.022) and self-sacrificing defense style (p = 0.049) predicted deterioration in wakening up early in the morning.ConclusionsPsychological parameters and coping with health stressors capacities are independently associated with sleep difficulties in colorectal cancer patients, indicating the need for psychological interventions aiming at improving adjustment to the disease.

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