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A new risk assessment tool takes the guesswork out of predicting the likelihood that a patient will suffer complications from colorectal surgery. The Web-based "risk calculator," developed by the American College of Surgeons, is simple: The surgeon logs in, enters 15 data points specific to the patient and procedure, such as age, body mass index, extent of disease and indication for operation, and the program calculates the patient's risk in percentages.
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