Table 3.

Surgery details

		Early surgery group (n=288)	Initial conservative treatment group (n=62)
Surgery
	Craniotomy	284 (99%)	59 (95%)
	Craniectomy	1 (<1%)	3 (5%)
	Minimally invasive*	3 (1%)	..
Any other procedure		15 (5%)	6 (10%)
Paralysed and sedated		20 (7%)	7 (11%)
Preoperative Glasgow Coma Score, eye†
	1	7 (3%)	20 (36%)
	2	23 (9%)	20 (36%)
	3	62 (23%)	11 (20%)
	4	176 (66%)	4 (7%)
Preoperative Glasgow Coma Score, verbal†
	1	35 (13%)	24 (44%)
	2	30 (11%)	11 (20%)
	3	33 (12%)	12 (22%)
	4	83 (31%)	6 (11%)
	5	87 (33%)	2 (4%)
Preoperative Glasgow Coma Score, motor†
	1	..	..
	2	..	1 (2%)
	3	1 (<1%)	11 (20%)
	4	5 (2%)	14 (25%)
	5	69 (26%)	24 (44%)
	6	193 (72%)	5 (9%)
Preoperative arm†
	Normal	75 (28%)	2 (4%)
	Weak	116 (43%)	10 (19%)
	Paralysed	76 (28%)	40 (77%)
Preoperative leg†
	Normal	82 (31%)	2 (4%)
	Weak	129 (48%)	12 (24%)
	Paralysed	56 (21%)	38 (73%)
Preoperative speech†
	Normal	121 (48%)	5 (15%)
	Dysarthric	60 (24%)	14 (41%)
	Aphasic	70 (28%)	15 (44%)
Time randomisation to surgery (h)
	Median (IQR; range)	3·3 (1·9–5·7; 0·2–34·6)	22·8 (5·6–68·8; 0·6–249·6)
	Mean (SD)	4·5 (4·3)	45·5 (56·0)
	Surgery within 12 h of randomisation	281 (98%)	23 (37%)
Time from ictus to surgery (h)
	Median (IQR; range)	26 (15·3–35·3; 2·5–69·0)	46 (21·7–81·9; 5·0–266·5)
	Mean (SD)	26·7 (13·6)	64·2 (58·9)
	Surgery within 12 h of ictus	48 (17%)	9 (15%)

For continuous variables, data are median (IQR; range) and mean (SD); for categorical variables, data are number (%).

^*Minimally invasive procedures were burrhole with endoscopic evacuation in two patients and keyhole evacuation in one patient.

^†These questions were not answered for patients who were paralysed and sedated at that time and data were not recorded for some other patients.