As expected, based on known differences in demographics [37] , there were differences in the age and gender distribution of our SJIA and the KD and FI urine subjects. Except for ND patients (median age, 3 years; range, 1-5 years), the SJIA patients (SAF: median age, 12.5 years; range, 3-17 years; AF: median age, 13 years; range, 11-16 years; QOM: median age, 13 years; range, 5-17 years; RD: median age, 14 years; range, 6-21 years) are older than KD (median age, 3 years; range, 1-10 years) and FI (median age, 2 years; range, 1-10 years) patients. Except for ND patients (100% male), there are fewer male SJIA patients (SAF, 33% male; AF, 33% male; QOM, 39% male; RD, 22% male) than KD (82% male) and FI (61% male) patients. As expected, active Table 5) .