Table 2.
Fat mass percentage by estimating and measuring methods per individual and combined cohort, median (IQR)
| Study Variables | SMA | IF | HSCT | Combined cohort |
|---|---|---|---|---|
| Fat Mass % | ||||
| Estimated FM% by skinfold based equations | (N = 9) | (N = 30) | (N = 94) | (N =134) |
| Brook | 31.38 (25.1, 37.1) | 21.25 (16.0, 24.6) | 26.91 (20, 33.0) | 24.57 (18.9, 31.6) |
| Wendel 2 SF | 36.41 (31.8, 42.1) | 29.99 (25.5, 32.8) | 30.98 (26.6, 36.8) | 30.93 (26.5, 35.6) |
| Wendel 4 SF | 36.08 (34.5, 43.6) | 29.71 (27.9, 34.8) | 31.90 (26.5, 37.1) | 32.15 (27.4, 36.8) |
| Measured FM% | (N = 7) | (N = 10) | (N = 74) | (N = 91) |
| DXA | 48.46 (48.0, 55.3) | 22.18 (8.08) | 29.07 (22.8, 36.6) | 28.82 (22.5, 38.4) |
| Fat Free Mass % | ||||
| Estimated FFM% by BIA based equations | (N = 10) | (N = 29) | (N = 94) | (N = 133) |
| Deurenberg | 62.35 (54.4, 68.6) | 68.44 (63.8, 78.2) | 70.49 (65.6, 76.9) | 69.89 (64.5, 77.0) |
| Kushner 1 | 47.61 (43.6, 56.6) | 76.18 (72, 86.4) | 70.22 (59.5, 78.8) | 71.36 (59.1, 79.5) |
| Kushner 2 | 50.75 (46.5, 58.8) | 76.22 (72.1, 84.2) | 69.04 (60, 76.6) | 70.41 (60, 77.6) |
| Houtkooper | 62.96 (56, 67.6) | 82.01 (78.7, 87.2) | 73.84 (66.2, 80.3) | 75.92 (66.7, 81.7) |
| Horlick | 69.66 (59.9, 74) | 88.49 (84.8, 96.6) | 78.53 (66.1, 88.8) | 80.85 (69.4, 88.54) |
| Schaefer | 58.74 (51.4, 70.8) | 78.31 (74.8, 83.9) | 70.7 (59.2, 44.9) | 72.84 (60.9, 79.7) |
| Rush | 61.28 (54.7, 66.2) | 80.66 (77.4, 86.2) | 72.61 (65.1, 79.2) | 74.63 (65.6, 80.3) |
| Measured FFM% | ||||
| Deuterium dilution isotope | (N = 7) | (N = 28) | (not done) | (N = 35) |
| 65.34 (54.6, 66.6) | 78.69 (71.3, 85.1) | – | 75.21 (66.5, 83.3) | |
| DXA | (N = 7) | (N = 10) | (N = 74) | (N = 91) |
| 51.54 (44.7, 52) | 77.88 (72.5, 80.6) | 70.93 (63.4, 77.2) | 71.18 (61.6, 77.5) | |
SMA- spinal muscular atrophy; IF- intestinal failure; HSCT- hematopoietic stem cell transplant; FM- fat mass; SF- skinfold; DXA- dual energy X-ray absorptiometry