Table 4.
Baseline characteristics for GBM patients after PSM
| Characteristic | Total (%) | Married | Unmarried | P value |
|---|---|---|---|---|
| 10598 (100) | 5299 (50) | 5299 (50) | ||
| Sex (%) | ||||
| Male | 5222 (49.3) | 2617 (49.4) | 2605 (49.2) | 0.816 |
| Female | 5376 (50.7) | 2682 (50.6) | 2694 (50.8) | |
| Age | ||||
| ≤49 | 1508 (14.2) | 766 (14.5) | 742 (14.0) | 0.749 |
| 50‐59 | 2265 (21.4) | 1134 (21.4) | 1131 (21.3) | |
| 60‐69 | 2856 (26.9) | 1405 (265) | 1451 (27.4) | |
| ≥70 | 3969 (37.5) | 1994 (37.6) | 1975 (37.3) | |
| Race | ||||
| White | 9950 (93.9) | 4976 (93.9) | 4974 (93.9) | 0.935 |
| Black | 648 (6.1) | 323 (6.1) | 325 (6.1) | |
| Registry sites | ||||
| Northeast | 1466 (13.8) | 735 (13.9) | 731 (13.8) | 0.324 |
| South | 2389 (22.5) | 1233 (23.3) | 1156 (21.8) | |
| North Central | 1027 (9.7) | 506 (9.5) | 521 (9.8) | |
| West | 5716 (53.9) | 2825 (53.3) | 2891 (54.6) | |
| Diagnosis year | ||||
| 2004‐2007 | 1071 (10.1) | 554 (10.5) | 517 (9.8) | 0.367 |
| 2008‐2011 | 4432 (41.8) | 2226 (42.0) | 2206 (41.6) | |
| 2012‐2015 | 5095 (48.1) | 2519 (47.5) | 2576 (48.6) | |
| At least a bachelors’ degree percent | ||||
| Quartile 1 | 2857 (27.0) | 1449 (27.3) | 1408 (26.6) | 0.135 |
| Quartile 2 | 1779 (16.8) | 904 (17.1) | 875 (16.5) | |
| Quartile 3 | 3379 (31.9) | 1633 (30.8) | 1746 (32.9) | |
| Quartile 4 | 2583 (24.4) | 1313 (24.8) | 1270 (24.0) | |
| Median household income | ||||
| Quartile 1 | 2801 (26.4) | 1386 (26.2) | 1415 (26.7) | 0.686 |
| Quartile 2 | 2729 (25.8) | 1350 (25.5) | 1379 (26.0) | |
| Quartile 3 | 2654 (25.0) | 1334 (25.2) | 1320 (24.9) | |
| Quartile 4 | 2414 (22.8) | 1229 (23.2) | 1185 (22.4) | |
| Insurance Recode | ||||
| Insured | 8915 (84.1) | 4459 (84.1) | 4456 (84.1) | 0.852 |
| Any Medicaid | 1301 (12.3) | 642 (12.1) | 659 (12.4) | |
| Uninsured | 382 (3.6) | 198 (3.7) | 184 (3.5) | |
| Laterality | ||||
| One side involvement | 9106 (85.9) | 4578 (86.4) | 4528 (85.5) | 0.599 |
| Bilateral involvement | 159 (1.5) | 85 (1.6) | 74 (1.4) | |
| Paired site | 60 (0.6) | 23 (0.4) | 37 (0.7) | |
| Not a paired site | 1273 (12.0) | 613(11.6) | 660 (12.5) | |
| Surgery stratified | ||||
| Surgery performed | 8240 (77.8) | 4116(77.7) | 4124 (77.8) | 0.934 |
| No surgical procedure of primary site | 2358 (22.2) | 1183(22.3) | 1175 (22.2) | |
| Metastasis | ||||
| No; none | 10466 (98.8) | 5230(98.7) | 5236 (98.8) | 0.817 |
| Distant metastasis | 132 (1.2) | 69(1.3) | 63 (1.2) | |
| Tumor size | ||||
| ≤3 cm | 1741 (16.4) | 866(16.3) | 875 (16.5) | 0.431 |
| 3‐6 cm | 6601 (62.3) | 3298(62.2) | 3303 (62.3) | |
| >6 cm | 2256 (21.3) | 1135(21.4) | 1121 (21.2) | |
| SEER Stage | ||||
| Localized | 8493 (80.1) | 4225(79.7) | 4268 (80.5) | 0.173 |
| Regional | 1957 (18.5) | 994(18.8) | 963 (18.2) | |
| Distant | 148 (1.4) | 80(1.5) | 68 (1.3) | |