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Table 5 Univariate & multivariate analysis of risk factors for mortality in all necrotizing fasciitis patients

From: Necrotizing fasciitis in patients with diabetes mellitus: clinical characteristics and risk factors for mortality

Variable

Univariate analysis

Multivariate analysis

  
 

OR(95 % CI)

P value

OR(95 % CI)

P value

Age

1.01(0.99,1.03)

0.3

  

Male gender

1.37(0.66,2.83)

0.4

  

Functional status

 Partially dependent

1

-

  

 Totally dependent

0.79(0.25,2.52)

0.69

  

 Totally independent

0.79(0.38,1.61)

0.51

  

Underlying medical conditions

 DM

0.90(0.46,1.75)

0.75

  

 Chronic renal failure

1.89(0.82,4.33)

0.13

  

 Immunosuppresant medication

1.66(0.56,4.94)

0.36

  

Clinical presentation at admission

 Consciousness disturbance

1.77(0.88,3.56)

0.11

  

 Temperature  > 38 °C

1.58(0.77,3.22)

0.21

  

 Dyspnea

2.68(1.32,5.45)

0.007

2.29(0.81,6.43)

0.117

 Systolic BP < 90 mmHg

2.03(1.02,4.06)

0.045

1.14(0.4,3.2)

0.810

 SIRS

2.08(0.73,5.88)

0.17

  

 Pus at infection site

0.73(0.31,1.68)

0.45

  

Admission lab data

 Hemoglobulin (mg/dl)

0.90(0.78,1.04)

0.14

  

 Leukocyte (103/mm3)

0.99(0.95,1.02)

0.38

  

 Platelet (103/mm3)

0.995(0.99,0.999)

0.008

1(0.99,1)

0.056

 Potassium (mEq/l)

1.57(1.06,2.31)

0.023

2.2(1.2,4.02)

0.011

 Positive blood culture

2.31(1.05,5.08)

0.037

1.95(0.71,5.38)

0.197

Time to surgery <12 h

0.83(0.41,1.68)

0.598

  
  1. (n = 165)
  2. OR odds ratio, CI confidence interval, SIRS systemic inflammatory response syndrome