Table 1 Demographics and clinical data and comparison between groups (univariate analysis) (p-values highlighted in bold are to be considered statistically and/or clinically significant)

Total

198

6 (3.0%)

28 (14.1%)

9 (4.5%)

7 (3.5%)

9.5 ± 12.1 (6)

68 (34.3%)

14 (7.1%)

18 (9.1%)

F

M

92 (46.5%)

106 (53.5%)

5 (5.4%)

1 (0.9%)

p = 0.066

18 (19.6%)

10 (9.4%)

p = 0.041

3 (3.3%)

6 (5.7%)

p = 0.419

5 (5.4%)

2 (1.9%)

p = 0.178

8.7 ± 10.3 (6)

10.2 ± 13.4 (6)

p = 0.713

31 (33.7%)

37 (34.9%)

p = 0.858

8 (8.7%)

6 (5.7%)

p = 0.406

11 (12.0%)

7 (6.6%)

p = 0.191

<65yo

>65yo

92 (46.5%)

106 (53.5%)

2 (2.2%)

4 (3.8%)

p = 0.513

15 (16.3%)

13 (12.3%)

p = 0.416

2 (2.2%)

7 (6.6%)

p = 0.136

4 (4.3%)

3 (2.8%)

p = 0.564

9.1 ± 14.5 (6)

9.8 ± 9.5 (7)

p = 0.082

34 (37.0%)

34 (32.1%)

p = 0.471

5 (5.4%)

9 (8.5%)

p = 0.403

8 (8.7%)

10 (9.4%)

p = 0.857

Elective

Emergency

166 (83.8%)

32 (16.2%)

4 (2.4%)

2 (6.3%)

p = 0.246

23 (13.9%)

5 (15.6%)

p = 0.793

8 (4.8%)

1 (3.1%)

p = 0.674

5 (3.0%)

2 (6.3%)

p = 0.364

7.8 ± 7.6 (6)

18.3 ± 22.9 (13)

p  = 0.000

63 (38.0%)

5 (15.6%)

p  = 0.015

13 (7.8%)

1 (3.1%)

p = 0.342

17 (10.2%)

1 (3.1%)

p = 0.200

Cancer

Other

146 (73.7%)

52 (26.3%)

5 (3.4%)

1 (1.9%)

p = 0.588

20 (13.7%)

8 (15.4%)

p = 0.764

8 (5.5%)

1 (1.9%)

p = 0.290

5 (3.4%)

2 (3.8%)

p = 0.888

8.4 ± 9.9 (6)

12.7 ± 16.4 (9)

p  = 0.001

58 (39.7%)

10 (19.2%)

p  = 0.008

10 (6.8%)

4 (7.7%)

p = 0.839

14 (9.6%)

4 (7.7%)

p = 0.683

Laparosc

Laparot

124 (62.6%)

74 (37.4%)

2 (1.6%)

4 (5.4%)

p = 0.132

14 (11.3%)

14 (18.9%)

p = 0.136

3 (2.4%)

6 (8.1%)

p = 0.063

4 (3.2%)

3 (4.1%)

p = 0.760

6.4 ± 5.8 (5)

14.7 ± 17.1 (10)

p  = 0.000

61 (49.2%)

7 (9.5%)

p  = 0.000

8 (6.5%)

6 (8.1%)

p = 0.660

12 (9.7%)

6 (8.1%)

p = 0.710

Prox resect

Distal resec

Rectal res

Total colec

Other

57 (28.8%)

58 (29.3%)

63 (31.8%)

9 (4.5%)

11 (5.6%)

0

3 (5.2%)

2 (3.2%)

0

1 (9.1%)

p = 0.361

3 (5.3%)

10 (17.2%)

13 (20.6%)

1 (11.1%)

1 (9.1%)

p = 0.156

0

3 (5.2%)

6 (9.5%)

0

0

p = 0.120

2 (3.5%)

4 (6.9%)

1 (1.6%)

0

0

p = 0.500

7.9 ± 9.2 (5)

10.0 ± 12.0 (7)

9.0 ± 7.9 (7)

10.3 ± 5.5 (10)

17.0 ± 32.9 (7)

p = 0.189

24 (42.1%)

18 (31.0%)

21 (33.3%)

1 (11.1%)

4 (36.4%)

p = 0.405

1 (1.8%)

3 (5.2%)

8 (12.7%)

1 (11.1%)

1 (9.1%)

p = 0.192

1 (1.8%)

5 (8.6%)

11 (17.5%)

1 (11.1%)

0

p  = 0.037

2013 (10 m)

2014

2015

2016

2017 (4 m)

27 (13.6%)

57 (28.8%)

48 (24.2%)

47 (23.7%)

19 (9.6%)

1 (3.7%)

1 (1.8%)

2 (4.2%)

1 (2.1%)

1 (5.3%)

p = 0.907

4 (14.3%)

7 (12.3%)

7 (14.6%)

6 (12.8%)

4 (21.1%)

p = 0.910

1 (3.7%)

1 (1.8%)

3 (6.3%)

2 (4.3%)

2 (10.5%)

p = 0.564

2 (7.4%)

2 (3.5%)

1 (2.1%)

2 (4.3%)

0

p = 0.690

13.5 ± 16.0 (7)

10.0 ± 10.7 (7)

9.2 ± 16.3 (6)

7.5 ± 6.4 (6)

8.1 ± 6.1 (6)

p = 0.126

4 (14.8%)

14 (24.6%)

20 (41.7%)

22 (46.8%)

8 (42.1%)

p  = 0.018

3 (11.1%)

1 (1.8%)

8 (16.7%)

2 (4.3%)

0

p  = 0.018

3 (11.1%)

5 (8.8%)

3 (6.3%)

3 (6.4%)

4 (21.1%)

p = 0.365

LOS > 4

LOS ≤ 4

130 (65.7%)

68 (34.3%)

26 (20.0%)

2 (2.9%)

p = 0.001

8 (6.2%)

1 (1.5%)

p = 0.133

7 (5.4%)

0

p = 0.051

12.9 ± 13.8 (8)

3.1 ± 0.8 (3)

11 (8.5%)

3 (4.4%)

p = 0.291

17 (13.1%)

1 (1.5%)

p  = 0.007

Complic

Non-compl

28 (14.1%)

160 (85.9%)

17.8 ± 16.0 (13.5)

8.1 ± 10.8 (6)

p  = 0.000

2 (7.1%)

66 (38.8%)

p  = 0.001