Table 2. Accuracy rates for REE predictive equations.
| Equation | Validation study | Year | Patients' description | No. | Accuracy rate* |
|---|---|---|---|---|---|
| Harris-Benedict (1919) | Costa et al. [51] | 2012 | ICU patients, 18 years and older | 85 | 31.76% |
| MacDonald and Hildebrandt [55] | 2003 | Patients under mechanical ventilation (BMI < 30) | 76 | No factor applied: 0% | |
| 1.3 factor: 21% | |||||
| 1.6 factor: 51% | |||||
| ACCP recommendation | Kross et al. [54] | 2012 | ICU patients under mechanical ventilation | 927 | 12% |
| Mifflin | Kross et al. [54] | 2012 | ICU patients under mechanical ventilation | 927 | 17.8% |
| Boullata et al. [40] | 2007 | Medical and surgical patients who underwent IC | 395 | No factor applied: 35% | |
| 1.1 factor: 58% | |||||
| Swinamer | MacDonald and Hildebrandt [55] | 2003 | Patients under mechanical ventilation (BMI < 30) | 76 | 55% |
| Boullata et al. [40] | 2007 | Ventilated patients | 141 | 45% | |
| Ireton-Jones (1992) | MacDonald and Hildebrandt [55] | 2003 | Patients under mechanical ventilation (BMI < 30) | 76 | 28% |
| Frankenfield et al. [50] | 2004 | Medical, surgical, and trauma patients under mechanical ventilation | 47 | 60% | |
| Ireton-Jones (1997) | Frankenfield et al. [50] | 2004 | Medical, surgical, and trauma patients under mechanical ventilation | 47 | 36% |
| Penn State (1998) | MacDonald and Hildebrandt [55] | 2003 | Patients under mechanical ventilation (BMI < 30) | 76 | 39% |
| Frankenfield et al. [50] | 2004 | Medical, surgical, and trauma patients under mechanical ventilation | 47 | 68% | |
| Penn State (2003) | Boullata et al. [40] | 2007 | Ventilated patients | 141 | 43% |
| Frankenfield et al. [50] | 2004 | Medical, surgical, and trauma patients under mechanical ventilation | 47 | 72% |
REE, resting energy expenditure; ICU, intensive care unit; BMI, body mass index; ACCP, American College of Chest Physicians; IC, indirect calorimetry.
*Accuracy rate: percentage of subjects having the REE predicted within 10% of the measured value.