Age, Tumor Characteristics, and Treatment Regimen as Event Predictors in Ewing: A Children’s Oncology Group Report

Table 2

EFS risk by treatment arm relative to standard treatment in AEWS0031.

Treatment	Hazard ratio	Std. error		>	Confidence intervals
AEWS0031-ST	1.00
AEWS0031-IT	0.7488	0.1157	−1.87	0.061	0.5532	1.0135
INT-0154-HD	0.8805	0.1339	−0.84	0.4020	0.6536	1.1861
INT-0154-SD	0.8034	0.1271	−1.38	0.1660	0.5891	1.0955
INT-0091-IE	0.9613	0.1527	−0.25	0.8040	0.7042	1.3123
INT-0091-Std.	1.5064	0.2212	2.79	0.0050	1.1296	2.0088