Spearman correlation coefficients for comparison between the Penn State equation estimate and indirect calorimetry readings
| Comparison; group | Correlation coefficient | p value |
|---|---|---|
| Penn State equation v. mean indirect calorimetry | ||
| Overall | 0.457 | 0.03 |
| Moderate TBI | 0.929 | 0.002 |
| Severe TBI | 0.174 | 0.5 |
| Penn State equation v. first-day indirect calorimetry | ||
| Overall | 0.483 | 0.02 |
| Moderate TBI | 0.929 | 0.002 |
| Severe TBI | 0.232 | 0.4 |
TBI = traumatic brain injury.