Table 1. Percentage of UKCCSG patients entered in national and international trials. Analysis by diagnostic group.

Diagnostic group	Years	Trials	% entered
Acute lymphoblastic	1977–79	UKALL V–VIIa	61
leukaemia	1980–84	UKALL VIIIa	61
	1985–90	UKALL Xb	74
	1991–96	UKALL XI and Infant ALLb	84
	1997–99	ALL 97 and Infant ALLb	85
Acute nonlymphocytic	1977–79	UKAML	43
leukaemia	1980–82	AML 8	46
	1983–87	Joint AML, AML 9	39
	1988–94	AML 10	64
	1995–99	AML 12	76
Hodgkin's disease	1982–91	8201	76
	1992–99	9201	79
NHL	1977–84	7701	54
	1985–89	8501–8503	65
	1990–95	9001–9004	81
	1996–99	9503, 9601–9603	66
PNET	1979–82	7801	44
	1985–88	SIOP	31
	1992–99	PNET–3 and Infant	59
Neuroblastoma	1982–89	ENSG Survey	83
	1990–99	ENSG 5–9, LNESG	77
Wilms' tumour	1980–85	8001	89
(incl. rhabdoid and BMRTC)	1986–91	8601	92
	1992–99	9101	95
Liver tumour	1990–93	SIOPEL–1	88
	1996–99	SIOPEL–2,3	84
Osteosarcoma	1983–85	EORTC 83	43
	1986–92	EORTC 86	49
	1993–99	EORTC 93	51
Ewing's sarcoma	1979–85	7802	61
	1986–92	8701	75
	1993–99	EICESS	78
Rhabdomyosarcoma	1985–88	IRS–3	21
	1989–94	MMT–89	76
	1995–99	MMT–95	79
All other soft tissue	1989–94	MMT–89	41
sarcoma	1995–99	MMT–95	52
Malignant non–CNS	1979–88	7901	70
germ–cell	1989–99	8901	88
CNS germ–cell	1989–95	8901	47

^aIncluding NHL trials for T-ALL.

^bIncluding NHL trials for B-ALL.