Lakshmi Natarajan2025-10-032025-10-032025-08-30https://dspace.sctimst.ac.in/handle/123456789/11687Surgical site infections (SSI) are presented as SSI rates in most of the healthcare facilities. The National Healthcare Safety Network (NHSN) initiated the transition from SSI rates to Standardized Infection Ratio (SIR) calculated by statistical models that include perioperative factors. Method of standardization controls the differences between population in terms of their demographics and other characteristics that confound their comparison. Summary measure of a hospital’s performance can be determined per procedure using SIR. In this study SIR is used for surveillance of SSI following craniotomy.Presentation