Title: The Magnitude and Factors Associated with Pressure Ulcer Among Patients Admitted to AdultrnMedical and Surgical ICU, Tikur Anbessa Specialized Hospital, Addis Ababa, Ethiopia: 6-MonthrnRetrospective Study, from January 1,2018 to July 1, 2018. rnBackground: Pressure ulcer represents a widespread, painful, and expensive health care problemrndirectly associated with increased morbidity, mortality, and length of hospital stay. Knowledge of the rnmagnitude and factors associated with to the development of pressure ulcer allows identification ofrnpatients at risk for ulcer development such that preventive measures may then be targeted to those specificrnpatients. There were no previous local studies assessing the magnitude and factors associated withrnpressure ulcer among ICU admitted patients and this study aimed to fill this gap. rnObjective: To assess the magnitude and factors associated with pressure ulcer among patients admitted tornadult medical and surgical ICU unit of Tikur Anbessa specialized hospital (TASH). rnMethods and materials: A 6-month facility based retrospective cross-sectional study was conducted torndetermine the magnitude and factors associated with pressure ulcer among patients admitted to adultrnmedical and surgical ICU unit of Tikur Anbessa Specialized hospital (TASH). The study was done in arnsample of 237 patients which were admitted to the ICU of TASH, from January 1,2018 to July 1, 2018.rnData were collected using structured checklists from chart reviews. The collected data was cleaned andrnanalyzed using SPSS version 26. Bivariate and Multivariate logistic regression models were used tornidentify the degree of the association. The degree of association between dependent and independentrnvariables was interpreted by using crude odds ratio with 95% confidence intervals and P-value