Table 5. Five-year survival (%) for Ewing's sarcoma trial and nontrial patients by calendar period and age at diagnosis, 1980–1994.

	N	Trial	Non-trial	P
Year of diagnosis
1980–1986	386	42	30	0.0047
1987–1992	355	59	42	0.0001
1993–1994	90	54	43	0.093
Age (years)
0–9	136	68	44	0.0005
10–14	242	52	40	0.024
15–19	216	48	19	<0.0001
20–24	123	38	38	0.83
25–39	114	43	44	0.72