TABLE 2.

A Crowdsourcing Approach Revealed Consensus Among Neurosurgeons Regarding the Equipoise of GTR or SpTR for Anatomically Distinct GBMs

Case #	Tumor location	Probably or definitely no, N (%)	Maybe, N (%)	Probably or definitely yes, N (%)	Sample variance
Group A
8	R Frontal	2 (9.5)	0 (0.0)	19 (90.5)	1.13
19	L Ant Temporal	3 (15.8)	0 (0.0)	16 (84.2)	1.33
3	R Ant Temporal	4 (21.0)	1 (5.3)	14 (73.7)	2.11
Group B
1	R Cerebellum	7 (36.9)	2 (10.5)	10 (52.6)	1.92
16	R Parietal	4 (21.0)	5 (26.3)	10 (52.6)	1.59
18	R Occipital	9 (47.4)	2 (10.5)	8 (42.1)	2.44
9	R Ant + Post-temporal	11 (55.0)	2 (10.0)	7 (35.0)	2.12
10	R Post-temporal	9 (45.0)	4 (20.0)	7 (35.0)	1.92
11	L Wernicke's	10 (50.0)	3 (15.0)	7 (35.0)	1.91
4	L Occipital	10 (52.6)	3 (15.8)	6 (31.6)	1.84
15	R Insular	12 (63.1)	2 (10.5)	5 (26.3)	1.82
21	L Parietal	13 (68.4)	2 (10.5)	4 (21.1)	1.54
7	L Frontal	13 (65.0)	4 (20.0)	3 (15.0)	1.19
Group C
2	L Post-temporal	15 (75.0)	0 (0.0)	5 (25.0)	2.03
17	Butterfly	17 (89.5)	0 (0.0)	2 (10.5)	1.25
14	Anterior Butterfly	16 (84.2)	1 (5.3)	2 (10.5)	1.04
6	Posterior Butterfly	19 (90.5)	0 (0.0)	2 (9.5)	1.16
5	Multicentric	18 (94.8)	0 (0.0)	1 (5.3)	0.87
20	Brainstem	18 (94.8)	0 (0.0)	1 (5.3)	0.58
12	SMA	16 (80.0)	3 (15.0)	1 (5.0)	0.77
13	L Insular + Broca's	19 (95.0)	0 (0.0)	1 (5.0)	0.88
22	L Thalamus	19 (100.0)	0 (0.0)	0 (0.0)	0.05

Group A: >70% strong consensus to randomize, group B: no overwhelming consensus, and group C: >70% strong consensus to not randomize.

R: right; L: left; Ant: anterior; Post: posterior.