Table 2.
Characteristics of donors stratified by donation before or after introduction of a new allocation system in October 2018.
| Allocation System | |||
|---|---|---|---|
| Variable | Old | New | p-value |
| (n=6,004) | (n=1,115) | ||
| Male gender | 4,059 (67.6%) | 769 (69.0%) | 0.390 |
| Donor age (median years, IQR) | 31 (23–40) | 32 (24–41) | 0.030 |
| Donor BMI (median kg/m2, IQR) | 26.4 (23.2–30.7) | 26.6 (23.6–30.6) | 0.241 |
| Donor ethnicity | 0.634 | ||
| White | 3,862 (64.3%) | 710 (63.7%) | |
| Black | 982 (16.4%) | 173 (15.5%) | |
| Hispanic | 957 (15.9%) | 194 (17.4%) | |
| Other | 203 (3.4%) | 38 (3.4%) | |
| Donor history | |||
| Cigarette use | 674 (11.2%) | 115 (10.3%) | 0.402 |
| Cocaine use | 1,509 (25.1%) | 324 (29.1%) | 0.007 |
| Alcohol abuse | 1,045 (17.4%) | 201 (18.0%) | 0.646 |
| Diabetes | 224 (3.7%) | 36 (3.2%) | 0.463 |
| Hypertension | 975 (16.2%) | 176 (15.8%) | 0.738 |
| Cancer | 88 (1.5%) | 17 (1.5%) | 0.988 |
| Donor creatinine (median mg/dL, IQR) | 1.0 (0.8–1.5) | 1.0 (0.8–1.6) | 0.025 |
| Donor bilirubin (median mg/dL, IQR) | 0.7 (0.5–1.2) | 0.7 (0.5–1.1) | 1.000 |
| Donor cause of death | 0.008 | ||
| Anoxia | 2,265 (37.7%) | 459 (41.2%) | |
| Cerebrovascular/stroke | 925 (15.4%) | 174 (15.6%) | |
| Head trauma | 2,655 (44.2%) | 440 (39.5%) | |
| CNS tumor | 30 (0.5%) | 5 (0.4%) | |
| Other | 127 (2.1%) | 37 (3.3%) | |
| ABO blood type | 0.233 | ||
| A | 2,296 (38.2%) | 400 (35.9%) | |
| B | 678 (11.3%) | 129 (11.6%) | |
| AB | 149 (2.5%) | 37 (3.3%) | |
| O | 2,881 (48.0%) | 549 (49.2%) | |
IQR, interquartile range; CNS, central nervous system