Survival and predictors of adult patients admitted to intensive care unit in Yekatit 12 Hospitals, Addis Ababa, Ethiopia.

Abstract

Background In hospitals, one of the main service components is an intensive care unit (ICU) that provides aggressive therapy for critically ill and high-risk patients. The availability of ICU beds has been progressively growing in Africa, but many studies show that the ICU mortality rate is very high. However, many of those studies are only descriptive and focus on medical or surgical patients. This study includes patients from all wards except pediatrics. Methods A retrospective cohort study was carried out in the intensive care unit at Yekatit 12 Hospital, Ethiopia. The Kaplan-Meier method was used to describe the probability of survival in ICU stay. The Cox proportional hazard model was used for the multivariate analysis to determine the possible associations of predictor variables and to obtain the adjusted hazard ratios. A statistically significant association was declared at p <0.05 with a 95% confidence interval. Results The survival rate was 69.7% with a mortality rate of 30.3%. This study confirmed that the risk of mortality among ICU patients was the education status of the study participants, attending primary education was twice that of patients attending higher education with an adjusted hazard ratio (AHR) (AHR=2.097, 95% CI:1.081,4.067). Patients admitted to ICU because of shock were more than four times at risk of death compared to other causes (AHR= 4.51, 95% CI: 2.41, 8.45). The risk of mortality among ICU patients admitted because of brain injury was more than two times compared to other patients (AHR=2.77, 95% CI: 1.18, 6.47). Patients with respiratory failure were more than two times at risk of mortality (AHR=2.42, 95% CI: 1.19, 4.87). Conclusions The survival of ICU patients was low. Formal education level, patients admitted for shock, brain injury, and respiratory failure were found to be significantly associated with the survival of ICU patients.