Statistical Analysis of Survival of Brain Injury Patients

Abstract

Background: Developing countries are facing a number of health issues and spend a huge amount of money on them. Out of the health issues, Traumatic Brain Injury (TBI) is a major global public health problem causing substantial mortality and disability among adults as well as young people. Also, people spend a lot of money to take care of TBI patients. So, this study aims at identifying how in-hospital survival differs with age of TBI patients. 

Objective: To study the survival of different age groups at different levels of Traumatic Brain Injury(TBI).

Methodology: The patients having brain injury and admitted to the Intensive Care Unit (ICU) ward with an age between 18 and 55 years are included in the study. Every patient will be followed up to death or discharge or up to the 21^st day after admission to the ICU. We used Kaplan Meier (KM) survival plots to compare survival rates in different age groups and different levels of brain injury. 

Results: We found that 77% are male and 33% are female patients. About 85% of brain injuries are due to the Road Traffic Accidents (RTA) and 10% due to violations of traffic rules. Mild, Moderate, and severely injured patients are 46%, 25%, and 29% respectively.

Conclusion: As age increases, the in-hospital survival rate of TBI patients increases. In-hospital survival rate of TBI patients in the age groups 18–30 and 44–55 increases as the level of injury increases.

Keywords: Traumatic Brain Injury, Survival Analysis, Intensive Care Unit.