Table 3. Various intraoperative variables in the study groups.
| Variable | Group A ( n = 250), n (%) | Group B ( n = 154), n (%) | Group C ( n = 41), n (%) | Group D ( n = 11), n (%) | Total ( n = 456), n (%) | p -Value |
|---|---|---|---|---|---|---|
| Abbreviations: IV, intravenous; MAC, monitored anesthesia care. Note: All values are expressed as number of patients (%). | ||||||
| Anesthetic technique | ||||||
| Inhalational | 229 (91.6) | 148 (96.1) | 37 (90.24) | 11 (100) | 425 (93.2) | 0.301 |
| Total IV | 2 (0.8) | 0 | 0 | 0 | 2 (0.44) | |
| IV plus inhalational | 12 (4.8) | 6 (3.9) | 4 (9.76) | 0 | 22 (4.82) | |
| MAC | 7(2.8) | 0 | 0 | 0 | 7 (1.54) | |
| Surgical position | ||||||
| Supine | 173 (69.2) | 102 (66.23) | 27 (65.85) | 4 (36.36) | 306 (67.11) | 0.042 |
| Lateral | 36 (14.4) | 27 (17.53) | 4 (9.76) | 6 (54.55) | 73 (16.01) | |
| Prone | 30 (12) | 17 (11.04) | 10 (24.39) | 1 (9.09) | 58 (12.72) | |
| Sitting | 11 (4.4) | 8 (5.19) | 0 | 0 | 19 (4.17) | |
| Surgical approach | ||||||
| Simple craniotomy | 158 (63.2) | 79 (51.3) | 26 (63.41) | 4 (36.36) | 267 (58.55) | 0.017 |
| Extended craniotomy | 25 (10) | 31 (20.13) | 8 (19.51) | 3 (27.27) | 67 (14.69) | |
| Posterior fossa craniotomy | 67 (26.8) | 44 (28.57) | 7 (17.07) | 4 (36.36) | 122 (26.75) | |