Table 2.

Validation set: summary of demographics and surgery

Patient ID	Age (yr)	Gender	Lesion and surgery	Number of data sets analysed	Hours recorded	Total SDs
Cincinnati
1	76	F	TBI (fall): R acute SDH: hemicraniectomy	2	37.8	69
2	71	M	TBI (fall): R acute SDH: hemicraniectomy	1	42.0	5
3	60	F	TBI (fall): R acute SDH: hemicraniectomy	2	68.9	9
4	72	M	TBI (fall): R SAH: hemicraniectomy	8	133	46
5	23	M	TBI (RTA): hemicraniectomy	5	110.8	119
London
1	28	F	TBI (RTA): R acute SDH and ICH: hemicraniectomy	17	389.8	61
2	30	M	TBI (assault): Bifrontal and basal mixed contusions: bifrontotemporal craniectomy	3	63.0	9
3	54	M	R basal ganglia spontaneous ICH: mini-craniotomy and: later, hemicraniectomy	3	72.4	0
4	39	M	TBI (RTA): craniotomy for L acute SDH	5	110.0	39
5	63	F	MHS subsequent to tumour resection: R decompressive hemicraniectomy	4	62.6	0
6	59	M	TBI (presumed fall): craniotomy for L acute SDH	7	130.7	28
7	66	M	TBI (fall): craniotomy for R acute SDH	7	141.9	52
8	58	M	TBI (RTA): Bifrontotemporal contusions and SAH: R acute SDH: R hemicraniectomy	4	91.6	0
9	43	M	TBI (Fall): R acute SDH:; R craniotomy	1	29.4	0
10	29	F	TBI (RTA): bifrontal craniectomy	9	205.9	7
11	54	M	TBI (RTA): craniotomy for L acute SDH	7	140.0	14
12	52	M	TBI (Fall): R temporal contusion and SAH: craniectomy: re-evacuation	3	33.4	0
13	27	M	TBI (RTA): L acute SDH and diffuse injury: bifrontal craniectomy	3	52.2	0
Total	–	–	–	Total datasets analysed: 91	Total hours: 1915.4	(SDs in:-) 67%

Twelve (67%) of the 18 patients experienced SDs

F, female; ID, Identity; ICH, Intracerebral hematoma; L, left; M, male; MHS, Malignant hemisphere stroke; R, right; RTA, Road traffic accident; SAH, subarachnoid hemorrhage; SDs, spreading depolarizations; SDH, subdural hematoma; TBI, Traumatic brain injury