Table 3.
cutoff value and area under the ROC curve to predict successful weaning from nasogastric tube.
| Cutoff value | Sensitivity | Specificity | AU-ROC (95% CI) | |
|---|---|---|---|---|
| Muscle or fat area at T4 vertebrae level | ||||
| Skeletal muscle area, cm2 (−29 to 150 HU) | 102 | 73.4% | 57.4% | 0.679 (0.591–0.766) |
| Skeletal muscle index, cm2/m2 (−29 to 150 HU) | 39 | 74.7% | 57.4% | 0.697 (0.612–0.782) |
| Skeletal muscle area, cm2 (−29 to 100 HU) | 44 | 84.8% | 42.6% | 0.613 (0.518–0.707) |
| Skeletal muscle index, cm2/m2 (−29 to 100 HU) | 18 | 86.1% | 41.2% | 0.614 (0.521–0.708) |
| Visceral fat area, cm2 (−190 to −30 HU) | 61 | 63.3% | 67.6% | 0.667 (0.578–0.756) |
| Visceral fat index, cm2/m2 (−190 to −30 HU) | 21 | 57.0% | 73.5% | 0.653 (0.563–0.743) |
| Muscle or fat volume at T1 through T12 vertebrae levels | ||||
| Total skeletal muscle volume, cm3 | 3511 | 84.6% | 38.8% | 0.612 (0.517–0.706) |
| Total skeletal muscle volume index, cm3/cm/m2 | 35.8 | 67.9% | 62.7% | 0.677 (0.589–0.766) |
| Visceral fat volume, cm3 | 412 | 62.8% | 50.0% | 0.558 (0.464–0.653) |
| Visceral fat volume index, cm3/cm/m2 | 7.9 | 79.5% | 35.3% | 0.561 (0.466–0.657) |
| Both erector spinae, cm3 | 645 | 96.2% | 20.9% | 0.597 (0.504–0.691) |
| Both erector spinae volume index, cm3/cm/m2 | 6.1 | 69.2% | 59.7% | 0.676 (0.588–0.764) |
| Left erector spinae, cm3 | 272 | 78.2% | 39.7% | 0.590 (0.494–0.686) |
| Left erector spinae volume index, cm3/cm/m2 | 3.2 | 74.4% | 54.0% | 0.658 (0.567–0.749) |
| Right erector spinae, cm3 | 222 | 53.8% | 65.1% | 0.623 (0.529–0.716) |
| Right erector spinae volume index, cm3/cm/m2 | 3.0 | 69.2% | 60.3% | 0.698 (0.612–0.785) |
| Both pectoralis major volume, cm3 | 344 | 89.7% | 33.8% | 0.625 (0.532–0.718) |
| Both pectoralis major volume index, cm3/cm/m2 | 5.2 | 64.1% | 61.8% | 0.640 (0.549–0.731) |
| Left pectoralis major volume, cm3 | 134 | 70.5% | 51.5% | 0.607 (0.5130.701) |
| Left pectoralis major volume index, cm3/cm/m2 | 2.9 | 80.8% | 48.5% | 0.630 (0.538–0.722) |
| Right pectoralis major volume, cm3 | 142 | 80.8% | 47.1% | 0.640 (0.548–0.732) |
| Right pectoralis major volume index, cm3/cm/m2 | 2.2 | 48.7% | 77.9% | 0.659 (0.570–0.748) |
| Both pectoralis minor volume, cm3 | 54 | 74.4% | 52.9% | 0.635 (0.543–0.727) |
| Both pectoralis minor volume index, cm3/cm/m2 | 1.4 | 92.3% | 26.5% | 0.615 (0.523–0.707) |
| Left pectoralis minor volume, cm3 | 27 | 69.2% | 52.9% | 0.633 (0.552–0.733) |
| Left pectoralis minor volume index, cm3/cm/m2 | 0.8 | 47.4% | 76.5% | 0.657 (0.568–0.746) |
| Right pectoralis minor volume, cm3 | 28 | 76.9% | 51.5% | 0.642 (0.551–0.733) |
| Right pectoralis minor volume index, cm3/cm/m2 | 0.9 | 78.2% | 50.0% | 0.661 (0.571–0.751) |
| Video fluoroscopic swallowing study | Aspiration (PAS 6-8) | 39.2% | 83.8% | 0.691 (0.610–0.772) |
Skeletal muscle index was calculated as skeletal muscle area/(height)2.
HU = Hounsfield unit, PAS = penetration-aspiration scale, ROC = receiver operating characteristic curve.