Survival Analysis using the Critical Care Minimum Data Set (CCMDS)

AWISS analysts have begun Cox Regression analysis on the CCMDS to determine the factors associated with increased risk of mortality with follow-up to 30 days and 365 days (for all patients, not only injury patients). Initial analysis suggests the estimated risk of mortality 30 days and 365 days following discharge from critical care is 8.1% and 20.1% respectively. Preliminary Cox regression results show that those who were admitted to hospital due to injuries have better mortality outcomes compared with those admitted for non-injuries (30 day mortality HR (CI): 0.85 (0.74,0.98) (baseline:non-injury), 365 day mortality HR (CI): 0.89 (0.81,0.97) (baseline:non-injury)). Work is ongoing.