Table 1.

Emergency Laparotomy recruitment overall and by hospital (n = 11)

	Hospital
	A	B	C	D	E	F	G	H	J	K	L	Overall
N1 Number of admissions discharged alive	18	46	81	39	21	54	64	110	18	56	39	546
N2 Number of eligible patients	13	36	67	36	18	44	55	95	15	49	38	466
N3 Number invited to take part	12	31	62	27	15	40	49	80	9	42	28	395
N4 Number participated	11	20	42	20	11	21	30	50	8	33	22	268
N2/N1 Percentage of admissions deemed eligible	72	78	82	92	86	82	86	86	83	88	97	85
N3/N2 Percentage of eligible patients invited	92	86	93	75	83	91	89	84	60	86	74	85
N4/N2 Percentage of eligible patients participating.	85	56	63	56	61	47	55	53	48	67	59	59
N4/N3 Percentage of invited patients participating.	92	65	68	74	73	55	61	63	77	79	85	72
N4/N1 Percentage of admissions participating	61	43	52	51	52	39	47	45	44	59	56	49