Table 2.
Patients’ clinical and perioperative characteristics
| Variables | N (%) |
|---|---|
| Sex | |
| Male | 131 (56.0) |
| Female | 103 (44.0) |
| Age (years) | |
| < 60 | 109 (46.6) |
| ≥ 60 | 125 (53.4) |
| Weigh (kg) | |
| < 55 | 113 (48.3) |
| ≥ 55 | 121 (51.7) |
| Nationality | |
| The Han | 217 (92.7) |
| Minority nationality | 17 (7.3) |
| Tumor location | |
| Rectum | 182 (77.8) |
| Colon | 52 (22.2) |
| TNM stage | |
| I | 15 (6.4) |
| II | 59 (25.2) |
| III | 137 (58.5) |
| IV | 23 (9.8) |
| Tumor classification | |
| The elevated | 88 (37.6) |
| The ulcerative | 110 (47.0) |
| The infiltrative | 36 (15.4) |
| Histological type | |
| Adenocarcinoma (NOS) | 196 (83.8) |
| Special types of cancer | 38 (16.2) |
| Degree of differentiation | |
| High | 63 (26.9) |
| Medium | 140 (59.8) |
| Low | 31 (13.2) |
| Lymphovascular invasion | |
| Yes | 25 (10.7) |
| No | 209 (89.3) |
| ASA | |
| II | 194 (82.9) |
| III | 40 (17.1) |
| Inhalation anesthetics | |
| Sevoflurane | 104 (44.4) |
| Isoflurane | 130 (55.6) |
| Anesthesia time (h) | |
| < 4.5 | 110 (47.0) |
| ≥ 4.5 | 124 (53.0) |
| Duration of surgery (h) | |
| < 3.5 | 122 (52.1) |
| ≥ 3.5 | 112 (47.9) |
| Postoperative analgesia | |
| Yes | 227 (97.0) |
| No | 7 (3.0) |
| Postoperative hospitalization days | |
| < 13 | 117 (50.0) |
| ≥ 13 | 117 (50.0) |
| IPS score | |
| < 1 | 78 (33.3) |
| ≥ 1 | 156 (66.7) |
| KM grade | |
| Low–grade inflammation | 89 (38.0) |
| High–grade inflammation | 145 (62.0) |
Data shown as n (%)
TNM tumor-node-metastasis, Adenocarcinoma (NOS) adenocarcinoma, not otherwise specified, ASA American Society of Anesthesiologists, IPS score inflammation-based prognostic scores, KM grade Klintrup–Makinen (KM) inflammatory cell infiltration grade