表 1. Compares the modeling cohort and the validation cohort.
建模队列与验证队列基线资料对比
| Index | Modeling cohort (n = 145) | Validation queue (n = 62) | χ2/t | P |
| BMI: body mass index; ASA: American Society of Anesthesiologists; rSO2: regional brain oxygen saturation; MPV: mean platelet volume; PDW: platelet distribution width; HB: hemoglobin; RBC: red blood cell count; VAS: visual analog scale; PSQI: Pittsburgh Sleep Quality Index; MMSE: Mini-Mental State Examination. | ||||
| Sex/case (%) | 0.111 | 0.739 | ||
| Male | 90 (62.07) | 40 (64.52) | ||
| Female | 55 (37.93) | 22 (35.48) | ||
| Age/yr. | 65.72 ± 5.77 | 66.31 ± 5.26 | 0.692 | 0.490 |
| BMI/(kg/m2) | 21.01 ± 1.64 | 21.24 ± 1.13 | 1.006 | 0.316 |
| ASA classify/case (%) | 0.194 | 0.660 | ||
| < Ⅲ classify | 70 (48.28) | 32 (51.61) | ||
| Ⅲ classify | 75 (51.72) | 30 (48.39) | ||
| Tumor location/case (%) | 4.784 | 0.188 | ||
| Colon ascendens | 57 (39.31) | 24 (38.71) | ||
| Colon transversum | 11 (7.59) | 3 (4.84) | ||
| Colon descendens | 19 (13.10) | 5 (8.06) | ||
| Colon sigmoideum | 58 (40.00) | 30 (48.39) | ||
| Degree of tumor differentiation/case (%) | 0.649 | 0.723 | ||
| Well-differentiated | 8 (5.52) | 3 (4.84) | ||
| Moderately differentiated | 73 (50.34) | 35 (56.45) | ||
| Poorly differentiated | 64 (44.14) | 24 (38.71) | ||
| Tumor histological type/case (%) | 0.634 | 0.728 | ||
| Adenocarcinoma | 120 (82.76) | 54 (87.10) | ||
| Mucinous adenocarcinoma | 18 (12.41) | 6 (9.68) | ||
| Other | 7 (4.83) | 2 (3.23) | ||
| Operation time/min | 188.24 ± 50.63 | 186.79 ± 51.98 | 0.187 | 0.852 |
| Wake up time/min | 29.35 ± 7.18 | 28.68 ± 7.25 | 0.613 | 0.540 |
| Depth of anesthesia/case (%) | 0.144 | 0.705 | ||
| 40-50 | 66 (45.52) | 30 (48.39) | ||
| 50-60 | 79 (54.48) | 32 (51.61) | ||
| Intraoperative infusion volume/mL | 830.74 ± 141.36 | 829.37 ± 143.91 | 0.064 | 0.949 |
| Intraoperative bleeding/mL | 74.63 ± 15.41 | 75.21 ± 14.28 | 0.253 | 0.800 |
| Mean intraoperative rSO2/% | 64.59 ± 3.28 | 65.07 ± 3.19 | 0.972 | 0.332 |
| Postoperative analgesic protocol/case (%) | 0.282 | 0.596 | ||
| Oral pain medication | 76 (52.41) | 30 (48.39) | ||
| Analgesic pump | 69 (47.59) | 32 (51.61) | ||
| MPV/fL | 10.98 ± 0.86 | 10.94 ± 0.91 | 0.301 | 0.764 |
| PDW/fL | 16.23 ± 0.77 | 16.31 ± 0.68 | 0.708 | 0.480 |
| HB/(g/L) | 112.48 ± 20.72 | 111.87 ± 22.15 | 0.190 | 0.850 |
| RBC/× 109 L－1 | 4.40 ± 0.47 | 4.39 ± 0.51 | 0.137 | 0.891 |
| VAS/score | 2.98 ± 1.32 | 3.01 ± 1.30 | 0.151 | 0.881 |
| PSQI/score | 6.34 ± 2.10 | 6.37 ± 1.98 | 0.096 | 0.924 |
| Preoperative MMSE/score | 28.02 ± 0.98 | 27.94 ± 1.06 | 0.525 | 0.600 |