ArticleSupportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer2025
Exploring the influence and identifying key predictors of sleep difficulties on health status in long-term breast cancer survivors: a cross-sectional study.
Article in Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeThis study analyzed the relationship between different levels of sleep difficulties and physical, mental, and emotional variables in long-term breast cancer survivors (LTBCSs), and identified predictors of sleep-related complaints.
methodsEighty LTBCSs participated in this cross-sectional study. Sleep difficulties were assessed via item 11 of the EORTC QLQ-C30, classifying participants into two groups: low (n = 44; ≤ 26.29) and high sleep difficulties (n = 36; ≥ 26.30). Additional measures included the EORTC QLQ-BR23, Piper Fatigue Scale, Visual Analog Scale, Brief Pain Inventory, International Fitness Scale, Minnesota Leisure Time Physical Activity questionnaire, and the Scale for Mood Assessment. Statistical analyses comprised ANOVA, Mann-Whitney U, Chi-square, correlation, and multiple regression; effect sizes were calculated using Cohen's d.
resultsFifty-five percent of LTBCSs reported higher sleep difficulties. This group showed greater physical, mental, and emotional impairments, including cancer-related fatigue (CRF), pain, lower self-perceived fitness, reduced physical activity (PA), worse mood, and diminished health-related quality of life (HRQoL) (all p < 0.05). Regression identified "role functioning" (β = -0.37; p < 0.01), "nausea and vomiting" (β = 0.37; p < 0.01), and "PA level" (β = -0.17; p = 0.02) as significant predictors of higher levels of sleep difficulties (adjusted r
conclusionFive or more years post-diagnosis, 55% of LTBCSs experienced higher sleep difficulties, associated with poorer HRQoL, self-perceived physical fitness, mood, and increased CRF and pain. Key predictors explained 58.4% of variance in sleep difficulties.
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