Standard liver weight model in adult deceased donors with fatty liver: A prospective cohort study

Table 4 Results of multiple linear regression analysis performed to predict the total liver weight using each of the body anthropometric measures divided into groups of the traditional method and two new methods, which introduce the parameter of fatty liver diagnosed by ultrasound and pathological biopsy

Groups	Formulas	Adjusted R2	RMSE
Traditional method
BH	- 809.4 + 167.3 x Sex + 12.6 x BH	0.29	212.0
BW	322.1 + 147.0 x Sex + 15.2 x BW	0.49	181.1
BSA	- 466.9 + 99.0 x Sex + 1051.0 x BSA	0.48	182.8
BMI	329.2 + 264.5 x Sex + 37.8 x BMI	0.39	196.5
Ultrasound method
BH	- 1011.9 + 149.7 x Sex + 13.6 x BH + 240.7 x FLUS	0.43	191.1
BW	392.7 + 158.3 x Sex + 13.5 x BW + 158.6 x FLUS	0.54	171.4
BSA	- 348.6 + 110.7 x Sex + 958.0 x BSA + 179.8 x FLUS	0.55	169.9
BMI	453.7 + 264.5 x Sex + 31.2 x BMI + 162.9 x FLUS	0.45	187.5
Pathological biopsy method (< 5%, 5%–20%, > 20%)
BH	- 803.7 + 178.5 x sex + 12.3 x BH + FLPB (0 = 0, 1 = 163.5, 2 = 393.0)	0.43	190.0
BW	414.5 + 172.6 x sex + 13.1 x BW + FLPB (0 = 0, 1 = 79.8, 2 = 280.7)	0.54	170.8
BSA	- 288.8 + 129.5 x sex + 919.6 x BSA + FLPB (0 = 0, 1 = 93.9, 2 = 304.5)	0.55	170.0
BMI	478.1 + 276.5 x Sex + 30.0 x BMI + FLPB (0 = 0, 1 = 105.3, 2 = 299.1)	0.46	185.4

Sex and FL_US are binary variables; FL_PB is a dummy variable. Sex: 0 = Female, 1 = Male; FL_US: 0 = No, 1 = Yes; FL_PB: 0 < 5%, 1 = 5%–20%, 2 > 20%. BH: Body height; BW: Body weight; BSA: Body surface area; BMI: Body mass index; FL_US: Fatty liver diagnosed by ultrasound; FL_PB: Fatty liver diagnosed by pathological biopsy; RMSE: Root mean standard error.