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Table 2 Univariateand multivariate (through forward stepwise selection) logistic regression analysis of factors associated with surgical intervention in 63 patients with snakebites

From: Clinical predictors of early surgical intervention in patients with venomous snakebites

 

Univariate

Multivariable

Odds ratio

95%CI

P value

Odds ratio

95%CI

P value

Sex

      

 Female

Reference

     

 Male

0.40

(0.13–1.25)

0.116

   

Age

1.03

(1.00–1.06)

0.032*

1.06

(1.01–1.12)

0.015*

Body part bitten

      

 Upper limb (Finger)

Reference

     

 Lower limb (Toe)

1.40

(0.51–3.81)

0.513

   

Venomous snake

      

 Naja atra

Reference

     

 Protobothrops mucrosquamatus

0.10

(0.02–0.52)

0.006**

0.22

(0.03–1.81)

0.161

 Trimeresurusstejnegeri/Bungarus multicinctus

0.04

(0.01–0.20)

 < 0.001**

0.06

(0.01–0.55)

0.012*

 Others or negative identification

0.16

(0.02–1.00)

0.050

0.23

(0.02–2.36)

0.214

Swelling

2.88

(0.52–16.14)

0.228

   

Acute compartment syndrome, suspected

15.71

(1.88–131.14)

0.011*

   

Local ecchymosis

6.56

(1.86–23.19)

0.003**

6.84

(1.19–39.44)

0.031*

Skin necrosis

11.74

(1.39–99.40)

0.024*

   

Bullae/blister

12.00

(3.02–47.72)

 < 0.001**

10.17

(1.53–67.63)

0.016*

Numbness

0.22

(0.02–2.07)

0.184

   

Fever (≥ 38 °C)

13.64

(1.62–114.52)

0.016*

4.91

(0.28–87.01)

0.278

Positive ultrasound exam

     
  1. Logistic regression. *P < 0.05, **P < 0.01