Blogger's Note: I took the calculator myself and noticed flaws; using this calculator is NOT to be taken as medical advice as it is more complicated (opinion) than simply a calculator but as a FYI more out of curiosity or questions from a patient's perspective - see about below; in addition the site is interesting however; often times there are multiple procedures (more than 1 code needed) which makes an impact on the results; in order to use this calculator (free access) you will need the 'cpt code' ( (Current Procedural Terminology eg. which surgical procedure are you having); a google search eg. cpt+ovariancancer; or search via wiki;

ACS Risk Calculator

About the ACS Risk Calculator

The goal of the ACS NSQIP risk calculator is to provide accurate, patient-specific risk information to guide both surgical decision-making and informed consent. The risk calculator uses 21 patient predictors (e.g., age, ASA class, BMI, HTN) and the planned procedure (CPT code) to predict the chance that patients will have any of 9 different outcomes within 30-days following surgery. The outcomes include:

Death
Any complication (superficial incisional SSI, deep incisional SSI, organ space SSI, wound disruption, pneumonia, unplanned intubation, PE, ventilator > 48 hours, progressive renal insufficiency, acute renal failure, UTI, stroke, cardiac arrest, myocardial infarction, DVT, systemic sepsis)
Serious complication (death, cardiac arrest, myocardial infarction, pneumonia, progressive renal insufficiency, acute renal failure, PE, DVT, return to the operating room, deep incisional SSI, organ space SSI, systemic sepsis, unplanned intubation, UTI, wound disruption)
Pneumonia
Cardiac event (cardiac arrest or MI)
Surgical site infection (SSI)
Urinary tract infection (UTI)
Venous thromboembolism (VTE)
Renal failure (progressive renal insufficiency or acute renal failure)

The risk calculator was built using data collected from > 1.4 million operations from 393 hospitals participating in ACS NSQIP from 2009-12. Entering the most complete and accurate patient information will provide the most precise risk information. However, the estimates can still be calculated if some of the patient information is unknown. Detailed information regarding ACS NSQIP methodology and risk calculator modeling can be found here:
ACS NSQIP Risk Calculator publications