Table 1.
Clinical and pathological factors in different mean platelet volume.
| Variables n (%) | Total (n = 879) | Low MPV (n = 445) | High MPV (n = 434) | P value |
|---|---|---|---|---|
| Age(year) | 0.292 | |||
| ≤ 65 | 553 (62.9) | 288 (64.7) | 265 (61.1) | |
| >65 | 326 (37.1) | 157 (35.3) | 169 (38.9) | |
| Gender | < 0.001 | |||
| Male | 732 (83.3) | 390 (87.6) | 342 (78.8) | |
| Female | 147 (16.7) | 55 (12.4) | 92 (21.2) | |
| KPS | 0.465 | |||
| 90 -100 | 580 (66.0) | 288 (64.7) | 292 (67.3) | |
| 70 - 80 | 299 (34.0) | 157 (35.3) | 142 (32.7) | |
| Number of LN resection | 0.155 | |||
| ≤1 5 | 220 (25.0) | 121 (27.2) | 99 (22.8) | |
| >15 | 659 (75.0) | 324 (72.8) | 335 (77.2) | |
| Differentiation | 0.774 | |||
| High | 142 (16.2) | 70 (15.7) | 72 (16.6) | |
| Middle | 368 (41.9) | 183 (41.1) | 185 (42.6) | |
| Poor | 369 (42.0) | 192 (43.1) | 177 (40.8) | |
| Location | 0.568 | |||
| Upper | 272 (30.9) | 139 (31.2) | 133 (30.6) | |
| Middle | 436 (49.6) | 214 (48.1) | 222 (51.2) | |
| Lower | 171 (19.5) | 92 (20.7) | 79 (18.2) | |
| Lymphovascular invasion | 0.027 | |||
| Yes | 199 (22.6) | 115 (25.8) | 84 (19.4) | |
| No | 680 (77.4) | 330 (74.2) | 350 (80.6) | |
| Neural invasion | 0.901 | |||
| Yes | 197 (22.4) | 101 (22.7) | 96 (22.1) | |
| No | 682 (77.6) | 344 (77.3) | 338 (77.9) | |
| Path T stage | 0.325 | |||
| T1 | 42 (4.8) | 22 (4.9) | 20 (4.6) | |
| T2 | 149 (17.0) | 72 (16.2) | 77 (17.7) | |
| T3 | 566 (64.4) | 280 (62.9) | 286 (65.9) | |
| T4a | 122 (13.9) | 71 (16) | 51 (11.8) | |
| Path N stage | 0.039 | |||
| N0 | 39 (4.4) | 17 (3.8) | 22 (5.1) | |
| N1 | 460 (52.3) | 219 (49.2) | 241 (55.5) | |
| N2 | 265 (30.1) | 138 (31) | 127 (29.3) | |
| N3 | 115 (13.1) | 71 (16) | 44 (10.1) | |
| Treatment | 0.333 | |||
| SA | 632 (71.9) | 313 (70.3) | 319 (73.5) | |
| SA+POCRT | 247 (28.1) | 132 (29.7) | 115 (26.5) | |
MPV, mean platelet volume; KPS, Karnofsky performance score; LN, lymph node; Path, pathology; TNM, Tumor Nodes Metastasis; SA, surgery alone; POCRT, postoperative chemoradiotherapy.