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Table 2 The VCO2 performance

From: Validation of carbon dioxide production (VCO2) as a tool to calculate resting energy expenditure (REE) in mechanically ventilated critically ill patients: a retrospective observational study

 

Mean difference

Standard deviation

% Error

% Difference

Correlation

Concordance

Agreementa

Tight agreementb

VCO2 with 0.89 RQc

− 122.78

604.92

0.24

0.16

0.51 (0.44–0.57)

0.37 (0.27–0.47)

0.37

0.11

VCO2 with 0.85 RQ

−41.77

625.57

0.24

0.16

0.51 (0.44–0.57)

0.37 (0.27–0.47)

0.4

0.13

VCO2 with 0.80 RQ

62.54

652.95

0.25

0.16

0.51 (0.44–0.57)

0.37 (0.26–0.47)

0.42

0.16

VCO2 with 0.75 RQ

178.17

684.37

0.26

0.16

0.51(0.44–0.57)

0.35(0.25–0.45)

0.43

0.18

  1. aWithin 85% and 115% of measured REE
  2. bWithin 95% and 105% of measured REE
  3. cEquivalent to REE calculation of 5.5*VCO2*1.44
  4. Abbreviations: REE resting energy expenditure, RQ respiratory quotient, VCO2 carbon dioxide production
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Critical Care

ISSN: 1364-8535