CV ACCb SEN SPC PPV    NPV 1 0.824 0.875 0.778 0.778 0.875 2 0.824 0.875 0.778 0.778 0.875 3 0.882 0.875 0.889 0.875 0.889 4 0.765 0.75 0.778 0.75 0.778 5 0.765 0.75 0.778 0.75 0.778 6 0.812 0.75 0.875 0.857 0.778 7 0.706 0.75 0.667 0.667 0.75 8 0.706 0.625 0.778 0.714 0.7 9 0.765 0.75 0.778 0.75 0.778 10 0.706 0.75 0.667 0.667 0.75 11 0.765 0.75 0.778 0.75 0.778 12 0.765 0.75 0.778 0.75 0.778 13 0.706 0.75 0.667 0.667 0.75 14 0.706 0.625 0.778 0.714 0.7 15 0.75 0.75 0.75 0.75 0.75 16 0.647 0.625 0.667 0.625 0.667 17 0.688 0.625 0.75 0.714 0.667 18 0.706 0.875 0.556 0.636 0.833 19 0.765 0.75 0.778 0.75 0.778 20 0.706 0.625 0.778 0.714 0.7 AVG 0.748 0.744 0.752 0.732 0.768 SD 0.057 0.086 0.076 0.064 0.064 MOE 0.027 0.04 0.036 0.03 0.03 aResults of twenty 10-fold cross-validations. Class 1, GM grade 0: 9 subjects; class 2, GM grade 1 or 2, 8 subjects. bACC, SEN, SPC, PPV, NPV are defined in Methods. AVG, SD and MOE are the average, standard deviation and 95% margin of error of each performance measure over the 20 CVs.

Table 2: Prediction of occurrence of radiation-induced gastrointestinal mucositis based on pre-radiation protein profiles, age, and BMI.a