Subjects averaged 59.4 years of age (SD = 10.2; range = 41–83). The 51 cancer patients and 51 normal subjects were well-matched with an insignificant mean difference of 31.0 days in age between abnormal and normal cases (t test = 1.47, df = 50, p = 0.15). Table 1 lists the types and size of cancers in the test set.