Table 1 Patients characteristics
Characteristic | Total, n | No chemotherapy, n | Received chemotherapy, n | p |
|---|---|---|---|---|
25,698 | 7632 | 18,066 | ||
Age at diagnosis, n (%) | ||||
 Young | 271 (1.05) | 55 (0.72) | 216 (1.20) | < 0.0001 |
 Adult | 14,134 (55.00) | 2817 (36.91) | 11,317 (62.64) |  |
 Old | 11,293 (43.95) | 4760 (62.37) | 6533 (36.16) |  |
Gender, n (%) | ||||
 Male | 14,920 (58.06) | 4119 (53.97) | 10,801 (59.78) | < 0.0001 |
 Female | 10,778 (41.94) | 3513 (46.03) | 7265 (40.21) |  |
Race, n (%) | ||||
 White | 22,963 (89.36) | 6771 (88.72) | 16,192 (89.63) | 0.026 |
 Black | 1438 (5.60) | 462 (6.05) | 976 (5.40) |  |
 American indian/alaska native | 109 (0.42) | 24 (0.31) | 85 (0.47) |  |
 Asian of pacific islander | 1146 (4.46) | 354 (4.64) | 792 (4.38) |  |
   Unknown | 42 (0.16) | 21 (0.28) | 21 (0.12) |  |
Primary site, n (%) | ||||
 Supratentorial | 20,170 (78.48) | 5792 (75.89) | 14,378 (79.59) | < 0.0001 |
 Infratentorial | 417 (1.62) | 133 (1.74) | 284 (1.57) |  |
 Brain overlap | 3803 (14.80) | 1229 (16.11) | 2574 (14.25) |  |
 Unknown | 1308 (5.10) | 478 (6.26) | 830 (4.59) |  |
Size, n (%) | ||||
  ≤ 4 cm | 9606 (37.38) | 2661 (34.87) | 6945 (38.44) | < 0.0001 |
  > 4 cm | 16,092 (62.62) | 4971 (65.13) | 11,121 (61.56) |  |
Surgery, n (%) | ||||
 No | 5219 (20.31) | 2598 (34.04) | 2621 (14.51) | < 0.0001 |
 Yes | 20,436 (79.52) | 5005 (65.58) | 15,431 (85.41) |  |
 Unknown | 43 (0.17) | 29 (0.38) | 14 (0.08) |  |
Radiation, n (%) | ||||
 No | 8883 (34.57) | 5692 (74.58) | 3191 (17.66) | < 0.0001 |
 Yes | 16,815 (65.43) | 1940 (25.42) | 14,875 (82.34) |  |