Table 1.
Clinical characteristics of patients with high-grade meningiomas from the SEER database
| Variables (n, %) | Total (n = 530) |
Total resection (n = 279) |
Subtotal resection (n = 251) |
P value |
|---|---|---|---|---|
| Year of diagnosis | ||||
| 2000–2007 | 289 (54.5) | 165 (59.1) | 124 (49.4) | 0.025 |
| 2008–2015 | 241 (45.5) | 114 (40.9) | 127 (50.6) | |
| Gender | ||||
| Male | 244 (46.0) | 128 (45.9) | 116 (46.2) | 0.938 |
| Female | 286 (54.0) | 151 (54.1) | 135 (53.8) | |
| Age | ||||
| < 65 | 326 (61.5) | 170 (60.9) | 156 (62.2) | 0.773 |
| ≥ 65 | 204 (38.5) | 109 (39.1) | 95 (37.8) | |
| Race | ||||
| White | 389 (73.4) | 204 (73.1) | 185 (73.7) | 0.808 |
| Black | 83 (15.7) | 46 (16.5) | 37 (14.7) | |
| Other | 58 (10.9) | 29 (10.4) | 29 (11.6) | |
| Tumor location | ||||
| Supratentorial | 254 (47.9) | 138 (49.5) | 116 (46.2) | 0.555 |
| Infratentorial | 159 (30.0) | 78 (27.9) | 81 (32.3) | |
| Unknown | 117 (22.1) | 63 (22.6) | 54 (21.5) | |
| Laterality | ||||
| Left | 179 (33.8) | 95 (34.1) | 84 (33.4) | 0.892 |
| Right | 158 (29.8) | 80 (28.7) | 78 (31.1) | |
| Bilateral | 32 (6.0) | 16 (5.7) | 16 (6.4) | |
| Unknown | 161 (30.4) | 88 (31.5) | 73 (29.1) | |
| Tumor diameter | ||||
| ≤ 6 cm | 289 (54.5) | 166 (59.5) | 123 (49.0) | 0.048 |
| > 6 cm | 86 (16.2) | 42 (15.1) | 44 (17.5) | |
| Unknown | 155 (29.2) | 71 (25.4) | 84 (33.5) | |
| Bone invasion | ||||
| Yes | 141 (26.6) | 71 (25.4) | 70 (27.9) | 0.526 |
| No | 389 (73.4) | 208 (74.6) | 181 (72.1) | |
| WHO grade | ||||
| II | 70 (13.2) | 38 (13.6) | 32 (12.7) | 0.788 |
| III | 178 (33.6) | 90 (32.3) | 88 (35.1) | |
| Unknown | 282 (53.2) | 151 (54.1) | 131 (52.2) | |
| Radiotherapy | ||||
| Yes | 233 (44.0) | 119 (42.7) | 114 (45.4) | 0.522 |
| No | 297 (56.0) | 160 (57.3) | 137 (54.6) | |
Chi-squared test was used for comparison
P < 0.05 were in bold