Table 2.

Characteristics associated with NSG tuft volume in living kidney donors compared with patients who underwent a tumor nephrectomy

Clinical Characteristic	Unadjusted				Test for Interaction
	Kidney Donors (n=2453)		Patients with Renal Tumor (n=780)
	% Difference	P Value	% Difference	P Value
Age per 10 yr (up to age 75 yr)	0.0	0.99	−1.6	0.24	0.30
Age per 10 yr (>75 yr)a			−21.1	0.009
Men	13.6	<0.001	19.3	<0.001	0.12
Height per SD	5.9	<0.001	7.6	<0.001	0.27
BMI per SD	10.8	<0.001	9.3	<0.001	0.30
Hypertension	8.6	0.001	10.7	<0.001	0.61
Diabetes			22.6	<0.001
eGFR per SD	−1.4	0.12	0.7	0.58	0.18
Family history of ESRD	7.4	<0.001
24-h urine protein per doubling, mgb	2.4	<0.001	4.1	<0.001	0.11
Tumor volume per doubling			0.9	0.11

SD: 9.6 cm for height, 5.3 kg/m² for body mass index (BMI), and 19.5 ml/min for eGFR.

^aFor patients with renal tumor, the change in the % difference for age up to 75 years compared with age >75 years was significant (P=0.04).

^bTotal N does not add up to 2453 or 780 because of missing data (n=2003 for donors, n=545 for patients with renal tumor).