TABLE 1.
Baseline characteristics of the patients before and after PSM.
| Characteristics | Before PSM | After PSM | ||||
|---|---|---|---|---|---|---|
| Intestinal type (469) | Diffuse type and Mixed type (383) | P value | Intestinal type (378) | Diffuse type and Mixed type (378) | P value | |
| Sex | 0.595 | 0.566 | ||||
| Female | 121 (25.8) | 105 (27.4) | 280 (74.1) | 273 (72.2) | ||
| Male | 348 (74.2) | 278 (72.6) | 98 (25.9) | 105 (27.8) | ||
| Age (years) | 0.011 | 0.332 | ||||
| ≤60 | 256 (54.6) | 242 (63.2) | 224 (59.3) | 237 (62.7) | ||
| >60 | 213 (45.4) | 141 (36.8) | 154 (40.7) | 141 (37.3) | ||
| BMI | 0.133 | 0.167 | ||||
| ≤22.59 | 228 (48.6) | 206 (53.8) | 186 (49.2) | 205 (54.2) | ||
| >22.59 | 241 (51.4) | 177 (46.2) | 192 (50.8) | 173 (45.8) | ||
| Borrmann type | 0.098 | 0.157 | ||||
| 0–2 | 204 (43.5) | 155 (40.5) | 165 (43.7) | 153 (40.5) | ||
| 3 | 226 (48.2) | 179 (46.7) | 181 (47.9) | 177 (46.8) | ||
| 4 | 39 (8.3) | 49 (12.8) | 32 (8.5) | 48 (12.7) | ||
| Tumor diameter (mm) | 0.955 | 0.708 | ||||
| ≤50 | 296 (63.1) | 241 (62.9) | 232 (61.4) | 237 (62.7) | ||
| >50 | 173 (36.9) | 142 (37.1) | 146 (38.6) | 141 (37.3) | ||
| Tumor location | 0.191 | 0.200 | ||||
| Middle and Upper third | 94 (20.0) | 85 (22.2) | 71 (18.8) | 85 (22.5) | ||
| Lower third | 330 (70.4) | 249 (65.0) | 268 (70.9) | 245 (64.8) | ||
| Entire stomach | 45 (9.6) | 49 (12.8) | 39 (10.3) | 48 (12.7) | ||
| pTNM stage | 0.230 | 0.262 | ||||
| Ⅰ | 137 (29.2) | 104 (27.2) | 112 (29.6) | 100 (26.5) | ||
| Ⅱ | 158 (33.7) | 115 (30.0) | 124 (32.8) | 114 (30.2) | ||
| Ⅲ | 174 (37.1) | 164 (42.8) | 142 (37.6) | 164 (43.4) | ||
| Postoperative chemotherapy | 0.344 | 0.531 | ||||
| Yes | 151 (32.2) | 115 (30.0) | 123 (32.5) | 115 (30.4) | ||
| No | 318 (67.8) | 268 (70.0) | 255 (67.5) | 263 (69.6) | ||
BMI: body mass index.
Statistically significant P values are in bold (p < 0.05).