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Table 1 The baseline characteristics of the patients with and without ICs

From: Nomogram to predict postoperative infectious complications after surgery for colorectal cancer: a retrospective cohort study in China

Variables

IC

p†

With (n = 95)

Without (n = 498)

Sex

Male

58 (9.8%)

279 (47.0%)

0.365

Female

37 (6.2%)

219 (37.0)

 

Age*

Year

69.2±10.1

66.6±11.2

0.035‡

BMI*

kg/m2

22.9±3.4

22.7±3.3

0.557‡

Smoking history

Yes

18 (3.0%)

97 (16.4%)

0.905

No

77 (13.0%)

401 (67.6%)

 

ASA score

< 3

79 (13.3%)

456 (76.9%)

0.011

≥3

16 (2.7%)

42 (7.1%)

 

Heart disease

Yes

5 (0.8%)

34 (5.7%)

0.573

No

90 (15.2%)

464 (78.3%)

 

Hypertension

Yes

27 (4.6%)

161 (27.2%)

0.453

No

68 (11.5%)

337 (56.8%)

 

Chronic pulmonary disease

Yes

28 (4.7%)

30 (5.1%)

< 0.001

No

67 (11.3%)

468 (78.9%)

 

Diabetes mellitus

Yes

30 (5.1%)

59 (9.9%)

< 0.001

No

65 (11.0%)

439 (74.0%)

 

Previous abdominal surgery

Yes

30 (5.1%)

143 (24.1%)

0.574

No

65(11.0%)

355 (59.9%)

 

Neoadjuvant chemo-radiotherapy

Yes

12 (2.0%)

51 (8.6%)

0.488

No

83 (14.0%)

447 (75.4%)

 

Preoperative hemoglobin

g/l

104.5±30.1

118.5±24.4

<0.001‡

Preoperative serum albumin

g/l

43.5±13.2

41.7±16.7

0.475‡

Preoperative T stage

< 3

11 (1.9%)

76 (12.8%)

0.353

≥3

84 (14.1%)

422 (71.2%)

 

Preoperative N stage

Negative

57 (9.6%)

295 (49.7%)

0.890

Positive

38 (6.4%)

203 (34.2%)

 

Preoperative TNM stage

I

11 (1.9%)

69 (11.6%)

0.788

II

45 (9.9%)

221 (37.3%)

 

III

39 (6.6%)

208 (35.1%)

 

Tumor Size*

cm

4.7±1.4

4.5±1.5

0.357‡

Tumor Location

Right colon

20 (3.4%)

110 (18.5%)

<0.001

Transverse colon

9 (1.5%)

7 (1.2%)

 

Left colon

9 (1.5%)

35 (5.9%)

 

Sigmoid

14 (2.4%)

87 (14.7%)

 

Rectum

43 (7.3%)

259 (43.7%)

 

Blood transfusion

Yes

29 (5.0%)

47 (7.9%)

<0.001

No

66 (11.1%)

451 (76.1%)

 

Surgical approach

Laparoscopic

33 (5.6%)

206 (34.7%)

0.227

Open

62 (10.5%)

292 (4.2%)

 

Combined organ resection

Yes

2 (0.3%)

18 (3.0%)

0.455

No

93 (15.7%)

480 (80.9%)

 

Intraoperative blood loss

ml

168±61.6

118.2±55.4

0.014‡

Operation time

min

229.6±68.8

204.1±56.6

<0.001‡

Number of retrieved lymph nodes

-

15.4±2.9

15.1±3.4

0.412‡

  1. Values in parentheses are percentages unless indicated otherwise
  2. IC infectious complication, BMI body mass index, ASA American Society of Anesthesiologists
  3. *values are mean ± standard deviation
  4. Preoperative and/or intraoperative blood transfusion
  5. †χ2 test
  6. ‡Paired t test