Table 2 Uni- and multivariable linear regression analyses of tomographic fat measurements with measured glomerular filtration rate standardized for BSA.

From: Higher abdominal fat area associates with lower donor kidney function before and after living kidney donation

All donors	mGFR screening (mL/min per 1.73 m²)					mGFR 3 months post-donation (mL/min per 1.73 m²)
Univariable	Β	Std. β	95% CI	p		Β	Std. β	95% CI	p
VATi	-0.14	-0.21	-0.19; -0.08	< 0.001		-0.10	-0.22	-0.14; -0.06	< 0.001
SATi	-0.11	-0.19	-0.16; -0.06	< 0.001		-0.11	-0.19	-0.16; -0.06	< 0.001
IMATi	-2.14	-0.31	-2.69; -1.59	< 0.001		-2.14	-0.31	-2.69; -1.59	< 0.001
TATi	-0.10	-0.26	-0.13; -0.07	< 0.001		-0.10	-0.26	-0.13; -0.07	< 0.001
Multivariable	Β	Std. β	95% CI	p	Adj. R²	Β	Std. β	95% CI	p	Adj. R²
VATi Age at CT Age at CT² Female sex mGFR at screening	-0.11 0.88 -0.01 -5.53	-0.18 0.63 -1.03 -0.18	-0.17; -0.06 0.13; 1.63 -0.02; -0.01 -8.04; -3.01	< 0.001 0.02 < 0.001 < 0.001	0.24	-0.07 0.05 -0.002 4.77 0.33	-0.15 0.05 -0.23 0.22 0.66	-0.10; -0.04 -0.38; 0.48 -0.01; 0.002 3.16; 6.38 0.29; 0.37	< 0.001 0.82 0.32 < 0.001 < 0.001	0.53
SATi Age at CT Age at CT² Female sex mGFR at screening	-0.10 0.79 -0.01 -1.12	-0.16 0.57 -1.01 -0.04	-0.15; -0.05 0.04; 1.54 -0.02; -0.01 -3.71; 1.46	< 0.001 0.04 < 0.001 0.39	0.24	-0.13 -0.20 0.002 12.7 0.72	-0.22 -0.14 0.12 0.41 0.98	-0.16; -0.11 -0.56; 0.17 -0.002; 0.01 11.3; 14.1 0.68; 0.75	< 0.001 0.29 0.38 < 0.001 < 0.001	0.83
IMATi Age at CT Age at CT² Female sex mGFR at screening	-1.18 0.73 -0.01 -3.82	-0.17 0.52 -0.90 -0.12	-1.73; -0.63 -0.02; 1.47 -0.02; -0.01 -6.14; -1.51	< 0.001 0.06 0.001 0.001	0.24	-1.56 -0.29 0.004 9.07 0.72	-0.23 -0.21 0.27 0.29 0.98	-1.82; -1.30 -0.65; 0.07 0.00; 0.01 7.83; 10.3 0.69; 0.75	< 0.001 0.11 0.04 < 0.001 < 0.001	0.83
TATi Age at CT Age at CT² Female sex mGFR at screening	-0.07 0.88 -0.01 -3.11	-0.18 0.63 -1.04 -0.10	-0.10; -0.04 0.13; 1.63 -0.02; -0.01 -5.41; -0.81	< 0.001 0.02 < 0.001 0.01	0.25	-0.09 -0.10 0.001 9.99 0.72	-0.23 -0.07 0.09 0.32 0.98	-0.10; -0.07 -0.45; 0.25 -0.002; 0.01 8.77; 11.2 0.69; 0.75	< 0.001 0.58 0.49 < 0.001 < 0.001	0.84

mGFR, measured glomerular filtration rate (mL/min); VATi, visceral adipose tissue index (cm²/m²); SATi, subcutaneous adipose tissue index (cm²/m²); IMATi, intramuscular adipose tissue index (cm²/m²); TATi, total abdominal adipose tissue index (VAT + SAT + IMAT, cm²/m²).
Multivariable models consist of: tomographic fat area index + age at CT (centered, years) + age at CT (centered, years)2 + female sex + mGFR at screening (mL/min, only in models with dependent variable mGFR after donation).

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Table 2 Uni- and multivariable linear regression analyses of tomographic fat measurements with measured glomerular filtration rate standardized for BSA.

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