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. 2014 Jan 13;18(1):R12. doi: 10.1186/cc13189

Table 2.

Backward stepwise (Wald) regression analyses

  Muscle area (continuous) (per 10 cm 2 )
 Low-muscle area versus normal
 Low and medium muscle area versus high
  Low < 110 cm 2 for females
 Low <110 cm 2
Low < 170 cm 2 for males Medium 110 to 170 cm 2
High >170 cm 2
Step 1
 OR
 95% CI
 P value
 OR
 95% CI
 P value
 OR
 95% CI
 P value
Muscle area
 0.82
 .73 – .93
 .001
 3.86
 1.80 – 8.26
 .001
 2.93
 1.58 – 5.42
 .001
Sex
 1.50
 .67 – 3.34
 .320
 .54
 .29 – 1.01
 .053
 1.43
 .66 – 3.09
 .365
BMI
 0.96
 .89 – 1.03
 .268
 .95
 .88 – 1.03
 .222
 .96
 .89 – 1.03
 .238
APACHE II score
 1.06
 1.03 – 1.11
 .001
 1.07
 1.03 – 1.11
 .001
 1.07
 1.03 – 1.11
 .001
Admission diagnosis
 0.96
 .85 – 1.10
 .577
 .97
 .85 – 1.11
 .666
 .97
 .85 – 1.10
 .625
Constant
 3.01
  
 .341
 .16
  
 .118
 .02
  
 .012
Step 3 or 4
  
  
  
  
  
  
  
  
  
Muscle area
 0.84
 .77 – .92
 <.001
 4.27
 2.03 – 9.00
 <.001
 2.71
 1.69 – 4.34
 <.001
Sex
  
  
  
 .50
 .27 – .92
 .025
  
  
  
APACHE II score
 1.06
 1.02 – 1.1 7
 .002
 1.07
 1.03 – 1.11
 .001
 1.07
 1.03 – 1.11
 .001
Constant 0.83   .812 .04   <0.001 .01   <.001