Table 1. Characteristics of SCEC patients from SEER database.
| Variable | NSCEC | SCEC | χ2 | P-valueψ | |
|---|---|---|---|---|---|
| MS (mo) | 10 | 8 | 20 | < 0.001*** | |
| Year | 1973–1992 | 14342 (23.89%) | 92 (26.14%) | 1.691 | 0.429 |
| 1993–2002 | 16572 (27.60%) | 101 (28.69%) | |||
| 2003–2012 | 29119 (48.51%) | 159 (45.17%) | |||
| Age | 70− | 36125 (60.18%) | 194 (55.11%) | 3.532 | 0.060 |
| 70+ | 23908 (39.82%) | 158 (44.89%) | |||
| Race | Black | 8886 (14.84%) | 65 (18.57%) | 3.908 | 0.142 |
| White | 47802 (79.84%) | 266 (76.00%) | |||
| Other | 3182 (5.32%) | 19 (5.43%) | |||
| Stage | Localized | 13899 (27.65%) | 63 (21.28%) | 54.369 | < 0.001*** |
| Regional | 17006 (33.84%) | 58 (19.60%) | |||
| Distant | 19355 (38.51%) | 175 (59.12%) | |||
| Sex | Male | 45712 (76.14%) | 211 (59.94%) | 49.548 | < 0.001*** |
| Female | 14321 (23.86%) | 141 (40.06%) | |||
| Surgery | None | 41570 (72.02%) | 311 (91.47%) | 62.672 | < 0.001*** |
| Surgery | 16153 (27.98%) | 29 (8.53%) | |||
| Radiation | None | 25696 (43.76%) | 175 (49.86%) | 5.017 | 0.025* |
| Radiation | 33018 (56.24%) | 176 (50.14%) | |||
Abbreviations: MS = median survival.
ψ
MS: log-rank test; others: chi-square test
*
P < 0.05;
***
P < 0.001