Table 3. Relative experience of participating centres in Italian, British and Dutch trials.

	IGCSG	DGCGa	MRCb
No. of centres	9	80	322
No. of surgeons	9 pairs	11/85c	32
Duration of enrolment (years)	2.5	4	7
No of patients	191	331	200
Average no. of procedures/hospital/year	7	1.5	1

^aDutch Gastric Cancer Group trial.

^bMedical Research Council, British Trial.

^cSupervising/local surgeons.