Phase angle and non-alcoholic fatty liver disease before and after bariatric surgery

Table 1 Sample characteristics, n = 379

Variables	n = 379
Gender, n (%)
Male	78 (20.6)
Female	301 (79.4)
Age in yr, mean ± SD	39.1 ± 10.6
Weight in kg, mean ± SD	123.7 ± 24.8
Minimum	77
Maximum	235
BMI in kg/m2, mean ± SD	45.9 ± 7.5
BMI classification, n (%)
30-34.99 kg/m²	3 (0.8)
35-39.99 kg/m²	82 (21.6)
40-49.99 kg/m²	210 (55.4)
50 kg/m² or more	84 (22.2)
SMM in kg, mean ± SD	34.1 ± 7.5
BCM in kg, mean ± SD	39.4 ± 8.3
Fat mass in kg, mean ± SD	62.6 ± 15.1
% Fat-mean ± SD	50.7 ± 4.6
Visceral fat area in cm², mean ± SD	243.7 ± 31.2
Phase angle °, mean ± SD
Full-body	5.89 ± 0.62
RA	5.58 ± 0.62
LA	5.42 ± 0.65
Tr	7.97 ± 1.18
RL	6.14 ± 0.81
LL	6.07 ± 0.84

BCM: Body cell mass; BMI: Body mass index; LA: Left arm; LL: Left leg; RA: Right arm; RL: Right leg; SD: Standard deviation; SMM: Skeletal muscle mass; Tr: Torso.