Table 2.
The descriptive characteristics of stage IB GAC patients after PSM
| Characteristics | After PSM | P value | ||
|---|---|---|---|---|
| All | No Chemo | Chemo | ||
| 470 | 235 | 235 | ||
| Age | 63.4 (11.3) | 63.5 (11.4) | 63.2 (11.1) | 0.743 |
| Year | 0.819 | |||
| 2004–2007 | 122 (26.0%) | 64 (27.2%) | 58 (24.7%) | |
| 2008–2011 | 138 (29.4%) | 68 (28.9%) | 70 (29.8%) | |
| 2012–2015 | 210 (44.7%) | 103 (43.8%) | 107 (45.5%) | |
| Gender | 1 | |||
| Female | 157 (33.4%) | 79 (33.6%) | 78 (33.2%) | |
| Male | 313 (66.6%) | 156 (66.4%) | 157 (66.8%) | |
| Race | 0.386 | |||
| White | 302 (64.3%) | 146 (62.1%) | 156 (66.4%) | |
| Non-White | 168 (35.7%) | 89 (37.9%) | 79 (33.6%) | |
| Marital status | 1 | |||
| Married | 313 (66.6%) | 157 (66.8%) | 156 (66.4%) | |
| Unmarried | 157 (33.4%) | 78 (33.2%) | 79 (33.6%) | |
| Grade | 0.779 | |||
| I/II | 194 (41.3%) | 95 (40.4%) | 99 (42.1%) | |
| III/IV | 276 (58.7%) | 140 (59.6%) | 136 (57.9%) | |
| T stage | 0.292 | |||
| T1 | 172 (36.6%) | 80 (34.0%) | 92 (39.1%) | |
| T2a | 298 (63.4%) | 155 (66.0%) | 143 (60.9%) | |
| Primary site | 0.799 | |||
| Cardia/fundus | 166 (35.3%) | 78 (33.2%) | 88 (37.4%) | |
| Greater curvature/lesser curvature/body | 131 (27.9%) | 68 (28.9%) | 63 (26.8%) | |
| Others | 49 (10.4%) | 26 (11.1%) | 23 (9.8%) | |
| Pylorus/antrum | 124 (26.4%) | 63 (26.8%) | 61 (26.0%) | |
| Tumor size | 0.868 | |||
| ≤2cm | 158 (33.6%) | 79 (33.6%) | 79 (33.6%) | |
| ≤5cm | 238 (50.6%) | 121 (51.5%) | 117 (49.8%) | |
| >5cm | 74 (15.7%) | 35 (14.9%) | 39 (16.6%) | |
| RNE | 0.782 | |||
| ≥16 | 240 (51.1%) | 122 (51.9%) | 118 (50.2%) | |
| 1–15 | 230 (48.9%) | 113 (48.1%) | 117 (49.8%) | |
| RNP | 0.263 | |||
| 0 | 309 (65.7%) | 159 (67.7%) | 150 (63.8%) | |
| 1 | 110 (23.4%) | 56 (23.8%) | 54 (23.0%) | |
| 2 | 51 (10.9%) | 20 (8.5%) | 31 (13.2%) | |
| Radiation | 1 | |||
| None | 404 (86.0%) | 202 (86.0%) | 202 (86.0%) | |
| Yes | 66 (14.0%) | 33 (14.0%) | 33 (14.0%) | |