Analysis by Complexity

STAT category is the STS Risk Assessment Scale. Higher numbers are higher risk.

The table below follows the STS definitions for surgical complexity based on empirical data from the national data warehouse. References to the STS methodology and definitions may be found here. Operative mortality is defined as in hospital or 30 day mortality. Only operations with an STS STAT risk score of 1 or greater are included in the analysis. STAT is a risk stratification method used by the STS and is based on operation type only, with a higher STAT score indicating an operation with a greater risk of mortality. Minor operations are excluded from the data below.

Click here to compare outcomes to the STS 4 year analysis and surgeon specific outcomes

(Please enter a date range that is greater than 1 year)

All fields below are dynamic - updated in real-time from the cardiac program electronic medical record, except blue fields which contain fixed values from the medical literature.

Currently Selected Date Range:
Last Procedure Recorded on 12/01/2023

STS 1 Year Date Range: (7/2020 - 6/2021)
STS 4 Year Date Range: (7/2017 - 6/2021)
Unadjusted: Raw mortality rate (%) that does not take into account the risk factors of patients creating a higher or lower difficulty of a surgical operation
STAT Category Procedures Median Age (Days) Median LOS
Postop (Days)
Mortalities Mortality Rate (%)
STS 4 Year
Mortality Rate (%)
1 1 380 333 5 0 0.0% 0.3% By Surgeon
2 2 149 179 9 3 2.0% 1.4% By Surgeon
3 3 60 98 11 1 1.7% 1.9% By Surgeon
4 4 75 24 19 5 6.7% 6.0% By Surgeon
5 5 44 5 44 4 9.1% 11.8% By Surgeon