Hospital infection is considered a serious problem, growing both in incidence and complexity, causing many types of social and economic implications. Its control must involve every one who works in hospitals. The solution is the strengthening of Hospital Infection Control Commissions (HICC). Based on these issues the goal of this work is to show a mathematical model of the risk that a person to be infected in hospital and the risk of death of a person who got any hospital infection. To make it happen we checked on IBGE and AVISA research data, among others, and we gave them a statistical treatment. As theoretical tool we will use the Survival Analysis Theory as well as the statistical models discussed in this theory. As a computational tool, we use the R program, a free software that provides an excellent environment for statistical analysis and high quality graphs.

Keywords: HospitalL Infection, Mathematical Modelling, Risk of Death, Statistical Analysis