Patients undergoing surgery on Mon. and Fri. (n = 437) | P value | Propensity score-matched patients (n = 334) | P value | |||
---|---|---|---|---|---|---|
Mon. group (n = 233) | Fri. group (n = 204) | Mon. group (n = 167) | Fri. group (n = 167) | |||
Operative time, minutes (median, IQR) | 350 (290–423) | 355 (300–430) | 0.458 | 350 (290–420) | 355 (300–430) | 0.427 |
Operative blood loss, grams (median, IQR) | 212 (40–487) | 100 (20–433) | 0.059 | 103 (20–357) | 100 (20–390) | 0.911 |
Blood transfusion (n, %) | 1.000 | 0.199 | ||||
Not performed | 194 (83.3) | 170 (83.3) | 140 (83.8) | 149 (89.2) | ||
Performed | 39 (16.7) | 34 (16.7) | 27 (16.2) | 18 (10.8) | ||
Hospital stay after surgery, days (median, IQR) | 13 (11–18) | 12 (10–17) | 0.052 | 13 (10–18) | 12 (10–15) | 0.054 |
Death within 30 days after surgery (n, %) | 0 (0) | 2 (1.0) | 0.217 | 0 (0) | 2 (1.2) | 0.499 |
In-hospital death (n, %) | 0 (0) | 3 (1.5) | 0.101 | 0 (0) | 2 (1.2) | 0.499 |
Adjuvant chemotherapy (n, %) | 0.438 | 0.651 | ||||
Absent | 198 (85.0) | 167 (81.9) | 139 (83.2) | 143 (85.6) | ||
Present | 35 (15.0) | 37 (18.1) | 28 (16.8) | 24 (14.4) | ||
Tumor diameter, mm (median, IQR) | 35 (25–50) | 35 (20–60) | 0.450 | 31 (22–50) | 32 (20–51) | 0.992 |
Retrieved number of lymph nodes (median, IQR) | 40 (27–50) | 39 (28–54) | 0.514 | 40 (29–49) | 37 (26–53) | 0.986 |
Pathological tumor depth (n, %) | 0.207 | 0.839 | ||||
pT1 | 130 (55.8) | 110 (53.9) | 102 (61.1) | 99 (59.3) | ||
pT2 | 41 (17.6) | 28 (13.7) | 26 (15.6) | 25 (15.0) | ||
pT3 | 41 (17.6) | 35 (17.2) | 25 (15.0) | 24 (14.4) | ||
pT4 | 21 (9.0) | 31 (15.2) | 14 (8.4) | 19 (11.4) | ||
Pathological lymph node metastasis (n, %) | 0.634 | 0.520 | ||||
pN0 | 170 (73.0) | 144 (70.6) | 122 (73.1) | 130 (77.8) | ||
pN1 | 26 (11.2) | 27 (13.2) | 20 (12.0) | 18 (10.8) | ||
pN2 | 10 (4.3) | 13 (6.4) | 9 (5.4) | 4 (2.4) | ||
pN3 | 27 (11.6) | 20 (9.8) | 16 (9.6) | 15 (9.0) | ||
Pathological TNM stage (n, %) | 0.118 | 0.999 | ||||
IA | 117 (50.2) | 104 (51.0) | 92 (55.1) | 93 (55.7) | ||
IB | 41 (17.6) | 26 (12.8) | 26 (15.6) | 26 (15.6) | ||
IIA | 24 (10.3) | 17 (8.3) | 14 (8.4) | 16 (9..6) | ||
IIB | 17 (7.3) | 20 (9.8) | 12 (7.2) | 10 (6.0) | ||
IIIA | 8 (3.4) | 19 (9.3) | 8 (4.8) | 8 (4.8) | ||
IIIB | 20 (8.6) | 12 (5.9) | 12 (7.2) | 11 (6.6) | ||
IIIC | 6 (2.6) | 6 (2.9) | 3 (1.8) | 3 (1.8) |