Wordofa, Berhanu(BSc, MSc, Assistant professor)Boka, Abdisa(BSc, MSc, Assistant professor)Abebe, Eshetu2021-10-142023-11-052021-10-142023-11-052021-06http://etd.aau.edu.et/handle/123456789/28132Cancer symptoms and treatment side effects disturb sleep quality and most of cancer patients complained of poor sleep quality during their treatments. The objective of the study was to assess the prevalence of sleep quality and associated factors in adult cancer patients in the treatment Oncology unit of TASH, Addis Ababa Ethiopia, 2021. Methods were institutional-based cross-sectional study design. Data was collected by using face-to-face structured interview questionnaires from March 1 to April 1, 2021. A validated Pittsburgh (Cronbach’s alpha of .85) Sleep Quality Index (PSQI) consisting of 19 questions; Social support scale (OSS-3) consisting of 3 items, the Hospital Anxiety and Depression Scale (HADS) consisting of 14 items were applied. Data were coded and entered into Epi data manager version 4.6 and exported into SPSS software version 25 for analysis. Descriptive statistic was used to describe the results and logistic regression including bivariate and multivariate analysis was done to examine the association between dependent and independent variables, and P< 0.05 was considered as the level of significance for associations. A total of 264 sampled adult cancer patients on treatments were included in this study, with a response rate of 93.61%. About 26.5% of participants’ age distribution between 4049 years, and about 68.6% them were female and about 59.8% of all participants were married. Concerning education about 48.9% of participants attended primary and secondary school and 45% participants were unemployed. Overall, 53.79% of individuals had poor sleep quality. Low income ((AOR =5.36 CI95% (2.23, 12.90), fatigue (AOR=2.89CI 95(1.32, 6.33) pain (AOR 3.82CI95 % (1.84, 7.93), poor of social support (AOR =3.20CI95% (1.43, 6.74) anxiety (AOR =3.48CI95% (1.44, 8.38) and depression (AOR 2.87 CI 95 % (1.05-7.391) were all associated with poor sleep quality. This study revealed that a high prevalence of poor sleep quality, which was significantly associated with factors like low income, fatigue, pain, poor social support, anxiety, and depression among cancer patients on treatments. As recommendation early detection and managing factors that affecting sleep quality. A qualitative study may be needed for further dig out of further problem.en-USSleep quality, cancer patients, EthiopiaThesis