Table 4. Differences between locations.
| Factors | OG | PS | TS | p -Value (post hoc comparison p -value) |
|---|---|---|---|---|
| n | 8 | 4 | 19 | – |
| Mean age (y) | 56.8 | 57.5 | 60.3 | 0.838 |
| BMI (kg/m 2 ) | 26.8 | 32.4 | 33.8 | 0.201 |
| Female gender | 5 (62.5%) | 2 (50%) | 15(79%) | 0.423 |
| Pre-op tumor volume (cm 3 ) | 16.2 | 4.7 | 4.8 | 0.045 (OG vs TS p = 0.010, OG and PS p = 0.099) |
| Pre-op visual acuity deficit | 1 (12%) | 4 (100%) | 14 (74%) | 0.011 (OG vs TS p = 0.013) |
| Pre-op anopsia | 1 (12%) | 4 (100%) | 15 (79%) | 0.006 (OG vs TS p = 0.006) |
| Pre-op anosmia | 5 (62.5%) | 0/3 (0%) | 0/10 (0%) | N/A |
| Lumbar drain use | 1 (12%) | 0 (0%) | 7 (58%) | 0.188 |
| Anticonvulsant use | 7 (88%) | 1 (25%) | 6 (46%) | 0.020 (OG vs TS p = 0.024) |
| Extent of resection | 89.7% | 96.6.6% | 68.2% | 0.0976 |
| Post-op visual acuity deficit | 0 (0%) | 0 (0%) | 8 (62%) | 0.034 |
| Post-op anopsia | 0 (0%) | 0 (0%) | 10 (62%) | 0.003 |
| Post-op anosmia | 5 (62.5%) | 0 (0%) | 0 (0%) | <0.0001 |
| Post-op seizure | 1 (12%) | 0 (0%) | 2 (10%) | 0.772 |
| CSF leak | 1 (12%) | 0 (0%) | 1 (5%) | 0.669 |
| Subsequent surgery for recurrence | 2 (25%) | 1 (25%) | 3 (26%) | 0.819 |
| Post-op radiation | 1 (12%) | 2 (50%) | 5 (26%) | 0.374 |
Abbreviations: BMI, body mass index; CSF, cerebrospinal fluid; N/A, not available; OG, olfactory groove; Post-op, postoperative; Pre-op, preoperative; PS, planum sphenoidale; TS, tuberculum sellae.