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. 2021 Jan 27;13(1):50–75. doi: 10.4240/wjgs.v13.i1.50

Table 5.

Treatment-related potential prognostic factors for recurrence and evaluation of early versus late recurrence (univariate analysis)

Recurrence, n = 234
Timing of recurrence, n = 60
All
No
Yes
HR (95%CI)
P value
Early recurrence (< 3 yr)
Late recurrence (≥ 3 yr)
OR (95%CI)
P value
n , %
n = 174 (67.7%)
n = 60 (23.3%)
n = 51 (85.0%)
n = 9 (15.0%)
Neoadjuvant therapy, n (%) 0.921 0.949
No 97 (93.3) 68 (70) 29 (30) Reference 25 (86.2) 4 (13.8) Reference
Yes 7 (6.7) 5 (71) 2 (29) 1.07 (0.26-4.51) 2 (100) 0 (0) 1.13 (0.02-53.57)
Missing 130 130 29
Surgery, n (%)
Right emicolectomy 55 (23.5) 42 (76.4) 13 (23.6) Reference 10 (76.9) 3 (23.1) Reference
Extended right emicolectomy 15 (6.4) 12 (80) 3 (20) 1.16 (0.37-3.59) 0.801 2 (66.7) 1 (33.3) 4.20 (0.37-47.64) 0.247
Intermediate colectomy 10 (4.3) 6 (60) 4 (40) 2.16 (0.70-6.71) 0.182 3 (75) 1 (25) 1.80 (0.14-23.6) 0.655
AR/Hartmann 106 (45.3) 80 (75.5) 26 (24.5) 1.09 (0.55-2.17) 0.798 24 (92.3) 2 (7.7) 0.43 (0.06-3.02) 0.395
LAR/Miles 38 (16.2) 28 (73.7) 10 (26.3) 1.16 (0.50-2.68) 0.731 8 (80) 2 (20) 1.23 (0.16-9.69) 0.841
Total/Sub-total Colectomy 6 (2.6) 3 (50) 3 (50) 2.69 (0.76-9.53) 0.126 3 (100) 0 (0.0) 0.60 (0.01-24.50) 0.787
Segmental resection 4 (1.7) 3 (75) 1 (25) 1.12 (0.14-8.68) 0.916 1 (100) 0 (0.0) 1.7 (0.02-162.35) 0.819
Associated procedure, n (%)
No 52 (50.5) 39 (75) 13 (25) Reference 11 (84.6) 2 (15.4) Reference
Minor 40 (38.8) 27 (67.5) 13 (32.5) 1.30 (0.60-2.80) 0.505 11 (84.6) 2 (15.4) 1.00 (0.13-7.44) 1.00
Major 11 (10.7) 4 (36.4) 7 (63.6) 3.56 (1.41-8.96) 0.007 7 (100) 0 (0) 0.31 (0.01-8.95) 0.492
Missing 131 131 27
Operative technique, n (%) < 0.001 0.061
Open 99 (42.7) 61 (61.6) 38 (38.4) Reference 35 (92.1) 3 (7.9) Reference
Laparoscopy 133 (57.3) 111 (83.5) 22 (16.5) 0.37 (0.22-0.62) 16 (72.7) 6 (27.3) 4.00 (0.94-17.01)
Missing 2 2 -
Duration of surgery, min – mean ± SD 232 ± 67 230 ± 61 239 ± 83 1.00 (0.99-1.01) 0.496 238 ± 78 242 ± 112 1.00 (0.99-1.01) 0.808
Postop blood transfusion, n (%) 0.123 0.119
No 174 (75.7) 134 (77) 40 (23) Reference 36 (90) 4 (10) Reference
Yes 56 (24.3) 37 (66.1) 19 (33.9) 1.54 (0.89-2.66) 14 (73.7) 5 (26.3) 3.08 (0.75-12.64)
Missing 4 4 1
Reoperation, n (%) 0.262 0.559
No 82 (91.1) 60 (73.2) 22 (26.8) Reference 17 (77.3) 5 (22.7) Reference
Yes 8 (8.9) 5 (62.5) 3 (37.5) 1.99 (0.60-6.61) 2 (66.7) 1 (33.3) 2.13 (0.17-26.68)
Missing 144 144 35
Hospital stay, d, mean ± SD 9.2 ± 6 8.7 ± 3.7 10.9 ± 9.1 1.05 (1.02-1.07) 0.001 10.9 ± 9.8 10.6 ± 4.0 1.01 (0.95-1.08) 0.737
Adjuvant therapy, n (%) 0.064 0.057
No 127 (56.4) 103 (81.1) 24 (18.9) Reference 18 (75) 6 (25) Reference
Yes 98 (43.5) 67 (68.4) 31 (31.6) 1.65 (0.97-2.81) 28 (90.3) 3 (9.7) 0.22 (0.04-1.04)
Missing 9 9 5
Start of adj CHT, n (%) 0.268 0.401
< 6 wk 26 (48.1) 13 (50) 13 (50) Reference 12 (92.3) 1 (7.7) Reference
≥ 6 wk 28 (51.9) 19 (67.9) 9 (32.1) 1.63 (0.69-3.95) 8 (88.9) 1 (11.1) 4.4 (0.14-141.01)
Missing 180 180 38

HR: Hazard ratio; OR: Odds ratio; CI: Confidential intervals; AR: Anterior resection of the rectum; LAR: Low anterior resection of the rectum; Adj CHT: Adjuvant chemotherapy.