{"denomUnitsSelected":"Participants","description":"Kaplan-Meier plots of EFS and OS will be generated after dichotomization using the median value for the cohort. To determine the prognostic value of circulating B7-H6 level, univariate analysis will be performed using a log rank test for EFS and OS. In multivariable analysis of EFS and OS, Cox models will be used to test for the independent prognostic ability of circulating B7-H6 level, adjusting for significant prognostic factors including MYCN status, INSS stage, histology and age at diagnosis.","reportingStatus":"NOT_POSTED","timeFrame":"1 week before first sargramostim injection (day -1 of course 1)","title":"Circulating B7-H6 Levels","type":"OTHER_PRE_SPECIFIED"}