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Table 4 Univariate and multivariate logistic regression analysis of risk factors of SSI following colorectal surgery

From: Incidence and risk factors of surgical site infection following colorectal surgery in China: a national cross-sectional study

Variables

univariate

multivariate

p value

OR (95% CI)

p value

OR (95% CI)

Hypertension

 Yes

0.007

1.975(1.207–3.232)

0.024

1.903(1.088–3.327)

 Noa

    

Tuberculosis

 Yes

0.017

8.972(1.475–54.559)

0.083

7.880(0.762–81.492)

 Noa

    

Albumin

  ≥ 3.5 g/dla

    

  < 3.5 g/dl

< 0.001

2.960(1.821–4.810)

0.069

1.715(0.958–3.068)

Blood glucose

 80–150 mg/dla

    

  > 150 mg/dl

0.008

2.417(1.256–4.651)

0.879

1.065(0.475–2.388)

  < 80 mg/dl

0.637

1.166(0.617–2.200)

  

Type of surgery

 Rectal surgerya

    

 Colon surgery

0.002

2.419(1.370–4.269)

0.154

0.631(0.335–1.188)

Urgency of surgery

 Electivea

    

 Emergency

< 0.001

5.927(3.245–10.827)

0.913

1.056(0.397–2.815)

Timing of hair removal

 Nonea

    

 Night before surgery

0.009

0.477(0.272–0.834)

0.342

0.711(0.352–1.442)

 Day of surgery

0.311

0.698(0.348–1.399)

  

Bowel preparation

 Nonea

    

 MBP only

< 0.001

0.376(0.223–0.634)

0.185

0.650(0.344–1.229)

 OABP only

0.554

1.324(0.523–3.355)

  

 MBP + OABP

0.083

0.427(0.163–1.119)

  

Approach

 Opena

    

 Laparoscopic or robotic

< 0.001

0.259(0.157–0.429)

< 0.001

0.363(0.200–0.659)

Incisional protection

 Nonea

    

 Wound edge protector

0.545

0.833(0.460–1.507)

  

 Gauze

0.368

0.676(0.288–1.585)

  

 Adhesive incise drapes

0.031

0.472(0.239–0.932)

0.018

0.400(0.187–0.855)

Skin closure materials

 Silk suturesa

    

 Absorbable sutures

0.060

0.524(0.268–1.027)

  

 Skin staples

0.953

0.978(0.466–2.051)

  

 other

0.053

2.496(0.988–6.307)

  

Incisional wound irrigation

 Nonea

    

 Incisional wound irrigation

0.111

0.465(0.181–1.193)

  

 Hydrogen peroxide solution

0.317

0.500(0.129–1.942)

  

 Saline

0.134

0.562(0.264–1.195)

  

 Other

0.257

1.920(0.621–5.936)

  

Colostomy/ileostomy

 Noa

    

 Yes

< 0.001

3.805(2.233–6.483)

0.081

1.820(0.929–3.564)

NNIS risk index

 0 or 1a

    

 2 or 3

< 0.001

6.481(3.655–11.493)

< 0.001

3.840(1.926–7.658)

  1. areference