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. Author manuscript; available in PMC: 2018 Nov 1.
Published in final edited form as: J Pediatr. 2017 Nov;190:56–62. doi: 10.1016/j.jpeds.2017.07.045

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