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Table 5 Comparison of postoperative outcomes and pathologic findings between Monday and Friday groups

From: Absence of a weekday effect on short- and long-term oncologic outcomes of gastrectomy for gastric cancer: a propensity score matching analysis

 

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)

 
  1. Mon. Monday, Fri. Friday, IQR interquartile range