Table 2 Surgical outcomes and pathological results before and after propensity score matching
Variables | Original cohort | Matched cohort | ||||
|---|---|---|---|---|---|---|
nCRT (n = 97) | Non-nCRT (n = 116) | P | nCRT (n = 83) | Non-nCRT (n = 83) | P | |
Operative time (min, mean ± SD) | 306.1 ± 90.9 | 281.3 ± 102.2 | 0.048 | 310.6 ± 95.8 | 265.0 ± 79.5 | 0.001 |
Estimated blood loss, median (range) ml | 50 (10 − 1,700) | 50 (10 − 2,500) | 0.329 | 50 (10 − 1,700) | 50 (10 − 1,100) | 0.281 |
Postoperative complications (Grade 1–5) | 20 (20.6) | 18 (15.5) | 0.333 | 18 (21.7) | 12 (14.5) | 0.226 |
Postoperative complications (Grade 3–5) | 9 (9.3) | 10 (8.6) | 0.867 | 8 (9.6) | 7 (8.4) | 0.787 |
Mortality | 0 (0) | 1 (0.9) | 1.000 | 0 (0) | 0 (0) | 1.000 |
Postoperative hospital stay (days, mean ± SD) | 11.2 ± 9.5 | 12.9 ± 10.0 | 0.208 | 11.6 ± 10.2 | 10.9 ± 7.4 | 0.626 |
(y) Pathological T stage | < 0.001 | < 0.001 | ||||
T0 -T2 | 31 (31.9) | 14 (12.1) | 28 (33.7) | 7 (8.4) | ||
T3-T4 | 66 (68.1) | 102 (87.9) | 55 (66.3) | 76 (91.6) | ||
(y) Pathological mesenteric LN status | 0.001 | 0.003 | ||||
Positive | 45 (46.4) | 81 (69.8) | 38 (45.8) | 57 (68.7) | ||
Negative | 52 (53.6) | 35 (30.2) | 45 (54.2) | 26 (31.3) | ||
PCR rate | 10 (10.3) | - | - | 9 (10.8) | - | - |
Down T staging rate | 64 (65.9) | - | - | 58 (69.9) | - | - |
Down N staging rate | 70 (72.2) | - | - | 63 (75.9) | - | - |
Pathological LPN metastasis | 30 (30.9) | 57 (49.1) | 0.007 | 27 (32.5) | 40 (48.2) | 0.040 |
Total LNs harvested, median (range) | 22 (6–62) | 26 (7–77) | 0.042 | 22 (6–62) | 25 (8–77) | 0.018 |
LPNs harvested, median (range) | 8 (1–16) | 8 (1–17) | 0.652 | 8 (1–16) | 7 (1–15) | 0.244 |
Circumferential Resection Margin | 0.593 | 1.000 | ||||
Positive | 2 (2.1) | 1 (0.9 | 1 (1.2) | 0 (0) | ||
Negative | 95 (97.9) | 115 (99.1) | 82 (98.8) | 83 (100.0) | ||