Table 1. Main treatment centre for patients with osteosarcoma and Ewing's sarcoma.

	BTS	UKCCSG	Other teaching	Nonteaching	Unknown	Total
(i) Treatment centre classified by type (see text)
Osteosarcoma
Age (years)
0–9	14	76	9	10	1	110
10–14	110	162	37	27	4	340
15–19	127	52	184	61	42	466
20–39	119	0	205	64	45	433
1980–1984	70	88	173	105	45	481
1985–1989	151	89	150	38	26	454
1990–1994	149	113	112	19	21	414
Total	370	290	435	162	92	1349
Ewing's sarcoma
Age (years)
0–9	12	112	8	4	0	136
10–14	36	164	25	19	0	244
15–19	50	39	89	28	18	224
20–39	46	0	137	40	22	245
1980–1984	12	100	105	54	12	283
1985–1989	50	110	88	18	18	284
1990–1994	82	105	66	19	10	282
Total	144	315	259	91	40	849

(ii) Treatment centre classified by annual number of study patients (osteosarcoma and Ewing's sarcoma combined) referred per year
	⩾10 (BTS)	5–9	2–4	0–1	Unknown	Total
Osteosarcoma
Age (years)
0–9	14	19	46	30	1	110
10–14	110	65	97	64	4	340
15–19	127	85	128	84	42	466
20–39	119	60	115	94	45	433
1980–1984	70	83	128	155	45	481
1985–1989	151	73	126	78	26	454
1990–1994	149	73	132	39	21	414
Total	370	229	386	272	92	1349
Ewing's sarcoma
Age (years)
0–9	12	21	76	27	0	136
10–14	36	49	97	62	0	244
15–19	50	62	56	38	18	224
20–39	46	56	58	63	22	245
1980–1984	12	62	114	83	12	283
1985–1989	50	74	86	56	18	284
1990–1994	82	52	87	51	10	282
Total	144	188	287	190	40	849