Table 1 Clinicopathologic characteristics of patients in the operative and conservative treatment group.

Age (years) mean ± SD

66 ± 14

58 ± 14

< 0.001

Gender n (%)

 Male

27 (61.4)

80 (55.9)

0.525

 Female

17 (38.6)

63 (44.1)

Charlson Index mean ± SD

4.12 ± 3.89

2.11 ± 2.23

< 0.001

Shock n (%)

 No

35 (79.5)

121 (98.6)

< 0.001

 Yes

9 (20.5)

2 (1.4)

Positive Blumberg sign n (%)**

 No

22 (61.4)

114 (79.7)

0.013

 Yes

11 (38.6)

29 (20.3)

Glycemia mean ± SD

125 ± 35

111 ± 33

0.017

Creatinine mean ± SD

1.14 ± 1.57

0.98 ± 0.73

0.349

Hemoglobin mean ± SD

12.99 ± 1,99

15,04 ± 18,36

0.467

WBC mean ± SD

13,50 ± 5,53

13,25 ± 4,13

0.785

PLT mean ± SD

307 ± 289

267 ± 104

0.375

Abs neutrophil count

11.36 ± 5.12

10.52 ± 4.01

0.325

Abs lymph count

1.43 ± 0.84

1.80 ± 0.90

0.017

N/L ratio

10.40 ± 8.22

7.49 ± 6.57

0.038

P/L ratio

327.78 ± 574.40

267.21 ± 104.87

0.099

Previous conservative treatment n (%)

 No

33 (75)

127 (88.8)

0.023

 Yes

11 (25)

16 (11.2)

WSES Stage n (%)

 Stage 0

0 (0)

12 (8.4)

< 0.001

 Stage Ia

7 (15.9)

55 (38.5)

 Stage Ib

9 (20.5)

39 (27.3)

 Stage IIa

12 (27.3)

22 (15.4)

 Stage IIb

16 (36.4)

15 (10.5)

Sigmoid thickening n (%)

 No

5 (11.4)

3 (2.1)

0.019

 Yes

39 (88.6)

140 (97.9)

Pericolic collection n (%)

 No

21 (47.7)

79 (52.2)

0.382

 Yes

23 (52.3)

74 (44.8)

Pelvic fluid n (%)^a

 No

23 (53.5)

91 (64.5)

0.191

 Yes

20 (46.5)

50 (35.5)

Extrapelvic fluid n (%)^b

 No

35 (85.4)

128 (90.1)

0.399

 Yes

6 (14.6)

14 (9.9)

Pericolic air n (%)^c

 No

19 (45.2)

68 (47.9)

0.763

 Yes

23 (54.8)

74 (52.1)

Distant air n (%)^d

 No

27 (62.8)

129 (90.8)

< 0.001

 Yes

16 (37.2)

13 (9.2)