Table 1.
Distribution details of variables (predictors, approach, outcome) split by approach categories.
| Category | Parameter | Distribution | ||
|---|---|---|---|---|
| Approach | Surgical Approach | TSA 725 (83.4%) | EEA 140 (16.2%) | TSA or EEA (866) |
| Risk Factors | Median Age (IQR) | 53 (41-64) years | 51 (34-62) years | 53 (40-63) years |
| Male Sex | 355 (49.0%) | 61 (43.5%) | 416 (48.0%) | |
| BMI > 30 | 210 (29.0%) | 28 (20.0%) | 238 (27.5%) | |
| Tumour Diameter ≥ 1cm | 606 (83.6%) | 131 (93.6%) | 737 (85.2%) | |
| Revision Surgery | 98 (13.5%) | 21 (15.0%) | 119 (13.8%) | |
| Presence of Intraoperative CSF Leak | 214 (29.5%) | 79 (56.4%) | 293 (33.9%) | |
| Repair Techniques | CSF Diversion | 29 (4.0%) | 38 (27.1%) | 67 (7.8%) |
| Dural Closure | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | |
| Dural Replacement | 196 (27.0%) | 66 (47.1%) | 262 (30.3%) | |
| Vascularised Flap | 116 (16.0%) | 90 (64.3%) | 206 (23.8%) | |
| Tissue Graft | 221 (30.5%) | 65 (46.4%) | 286 (33.1%) | |
| Synthetic Graft | 203 (28.0%) | 47 (33.6%) | 251 (28.9%) | |
| Tissue Glue | 473 (65.2%) | 114 (81.4%) | 587 (67.7%) | |
| Haemostatic Agent | 439 (60.6%) | 93 (66.4%) | 532 (61.5%) | |
| Rigid Buttress | 31 (4.3%) | 17 (12.1%) | 48 (5.5%) | |
| Gasket Seal | 15 (2.1%) | 11 (7.9%) | 26 (3.0%) | |
| Nasal Packing | 518 (71.4%) | 116 (82.9%) | 635 (73.3%) | |
| Outcome | CSFR | 28 (3.9%) | 10 (7.1%) | 38 (4.4%) |
All variables are binary, excluding age which is continuous. For the binary variables the number of entries where the variable is present (represented as a 1) is given, with the round brackets giving the percentage (%) proportion. For the singular continuous parameter (age), median; and inter-quartile range (IQR) are given instead.