Table 3.
Patient characteristics after propensity score matching
| SRC (n = 245) | Non-SRC (n = 245) | P Value | |
|---|---|---|---|
| Age, years | |||
| ≤ 60 | 56 (22.9%) | 49 (20.0%) | 0.441 |
| > 60 | 189 (77.1%) | 196 (80.0%) | |
| Sex | |||
| Male | 59 (24.1%) | 62 (25.3%) | 0.753 |
| Female | 186 (75.9%) | 183 (74.7%) | |
| Race | |||
| White | 194 (79.2%) | 181 (73.9%) | 0.097 |
| Black | 28 (11.4%) | 29 (11.8%) | |
| Other | 23 (9.4%) | 35 (11.3%) | |
| AJCC stage | |||
| I–II | 110 (44.9%) | 110 (44.9%) | 1.000 |
| III–IV | 73 (29.8%) | 73 (29.8%) | |
| Unknown | 62 (25.3%) | 62 (25.3%) | |
| Histologic grade | |||
| Well-moderate | 18 (7.3%) | 18 (7.3%) | 1.000 |
| Poor-undifferentiated | 227 (92.7%) | 227 (92.7%) | |
| Surgery | |||
| Yes | 219 (89.4%) | 220 (89.8%) | 0.882 |
| No | 26 (10.6%) | 25 (10.2%) | |
| Radiotherapy | |||
| Yes | 38 (15.5%) | 30 (12.2%) | 0.296 |
| No | 207 (84.5%) | 215 (87.8%) | |
| Chemotherapy | |||
| Yes | 85 (34.7%) | 91 (37.1%) | 0.572 |
| No | 160 (65.3%) | 154 (62.9%) | |
| Year of diagnosis | |||
| 1975–2009 | 142 (58.0%) | 60 (24.5%) | < 0.001 |
| 2010–2016 | 103 (42.0%) | 185 (75.5%) | |
| Marital status | |||
| Married | 127 (51.8%) | 119 (48.6%) | 0.471 |
| Unmarried | 118 (48.2%) | 126 (51.4%) |
SRC signet ring cell carcinoma, AJCC American Joint Committee on Cancer