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. Author manuscript; available in PMC: 2014 Jun 16.
Published in final edited form as: Am J Transplant. 2014 Feb;14(2):404–415. doi: 10.1111/ajt.12553

Table 1.

Common causes of discard and their donor quality between 2002 and 2012

Biopsy findings Poor kidney function No recipient located Long cold ischemia time No reason specified p-Value
Dual1
 % of discarded kidneys 48.4 13.0 13.2 0.5 7.4 <0.001
 KDRI-UNOS 2.23 ± 0.53 2.08 ± 0.42 2.23 ± 0.54 2.01 2.11 ± 0.39 0.268
 KDPI (%)2 91.0 ± 10.2 89.1 ± 10.0 91.1 ± 9.4 90.5 90.1 ± 11.7 0.510
ECD3
 % of discarded kidneys 48.2 9.6 9.7 1.5 12.3 <0.001
 KDRI-UNOS 2.19 ± 0.47 2.13 ± 0.45 2.28 ± 0.46 2.1 ± 0.41 2.13 ± 0.46 <0.001
 KDPI (%)2 91.3 ± 8.4 90.2 ± 8.8 92.9 ± 7.5 88.5 ± 9.9 90.0 ± 9.2 <0.001

ECD, expanded criteria donor; KDPI, Kidney Donor Profile Index; KDRI, Kidney Donor Risk Index; UNOS, United Network of Organ Sharing.

1

Dual kidney donor age ≥50 years.

2

KDPI is calculated based on a scaling factor of 1.22219212347775, a median KDRI-UNOS value among all deceased kidney donors recovered during 2012.

3

ECD kidneys include donation after cardiac death kidneys.