Table 1. Characteristics of patients.
| Characteristic | Pathological grade | P value | |
|---|---|---|---|
| Low-grade (n=168) | High-grade (n=47) | ||
| Age, years | 0.303 | ||
| <60 | 117 (54.5) | 29 (13.5) | |
| ≥60 | 51 (23.7) | 18 (8.4) | |
| Gender | 0.520 | ||
| Male | 49 (22.8) | 16 (7.4) | |
| Female | 119 (55.3) | 31 (14.4) | |
| Skull base | 0.044 | ||
| Yes | 85 (39.5) | 16 (7.4) | |
| No | 83 (38.6) | 31 (14.4) | |
| Size | 0.002 | ||
| <3 cm | 79 (36.7) | 10 (4.7) | |
| ≥3 cm | 89 (41.4) | 37 (17.2) | |
| Dural tail | 0.007 | ||
| Yes | 41 (19.1) | 3 (1.4) | |
| No | 127 (59.1) | 44 (20.5) | |
| Focal neurological dysfunction | 0.322 | ||
| Yes | 44 (20.5) | 9 (4.2) | |
| No | 124 (57.7) | 38 (17.7) | |
| Calcification | 0.325 | ||
| Yes | 19 (8.8) | 3 (1.4) | |
| No | 149 (69.3) | 44 (20.5) | |
| Necrosis | <0.001 | ||
| Yes | 2 (0.9) | 26 (12.1) | |
| No | 166 (77.2) | 21 (9.8) | |
| Tumor-Brain interface | <0.001 | ||
| Unclear | 17 (7.9) | 31 (14.4) | |
| Clear | 151 (70.2) | 16 (7.4) | |
| Bone invasion | <0.001 | ||
| Yes | 41 (19.1) | 33 (15.3) | |
| No | 127 (59.1) | 14 (6.5) | |
| Peritumoral edema | 0.018 | ||
| Yes | 33 (15.3) | 17 (7.9) | |
| No | 135 (62.8) | 30 (14.0) | |
P-value is derived from the univariable association analyses between each of the characteristics and pathological grade of meningioma.