Table 1: Demographics and characteristics of Group A (No i/US) and Group B (i/US) showing percentages and statistical significance of comparisons between the groups.
|
Variable |
|
No i/US |
i/US |
P value |
|
Number of patients |
|
41 |
33 |
|
|
Sex (male) |
|
20 (48.8%) |
19 (57.6%) |
0.451 (chi2) |
|
Age (mean) |
|
57.5 |
52.6 |
0.163 (t-test) |
|
Co-morbidity present |
|
26 (60.6%) |
20 (63.4%) |
0.804 (chi2) |
|
Seizures pre-op |
|
23 (56.1%) |
13 (39.4%) |
0.153 (chi2) |
|
Neurological deficits present pre-op |
|
16 (39.1%) |
17 (51.5%) |
0.064 (chi2) |
|
Percentage undergoing redo surgery |
|
5 (12.2%) |
3 (9.1%) |
0.669 (chi2) |
|
5ALA used |
|
8 (19.5%) |
16 (48.5%) |
0.008 (chi2) |
|
Awake surgery undertaken |
|
1 (2.3%) |
3 (9.1%) |
0.208 (Fishers) |
|
Histological WHO grade |
2 |
6 (14.6%) |
6 (18.2%) |
|
|
|
3 |
4 (9.8%) |
2 (6.1%) |
|
|
|
4 |
31 (75.6%) |
25(75.8%) |
0.799 (chi2) |
|
IDH1 R132h status (mutant tumours) |
|
11 (26.8%) |
11 (33.3%) |
0.543 (chi2) |
No iU/S; no use of intraoperative ultrasound, iU/S; intraoperative ultrasound, 5ALA; 5 Aminolevulinic acid, IDH1 R132h; Isocitrate dehydrogenase -1 mutant R132H