TABLE 1.
Transfusion event, donor, and donation parameters for HH red cell units and their matched non-HH controls.
| Red cell units | |||
|---|---|---|---|
| Parameter | HH | Non-HH | p |
| Transfusion events (n) | 102 | 102 | |
| Hb, pretransfusion (g/dL) | 7.20 ± 0.70 | 7.21 ± 0.66 | 0.66a |
| Time, CBC to transfusion (h) | 7.80 ± 4.12 | 7.81 ± 3.84 | 0.82a |
| Time, transfusion to CBC (h) | 7.77 ± 6.39 | 8.02 ± 6.40 | 0.50a |
| Storage time at transfusion (days) | 23.27 ± 8.73 | 23.93 ± 7.61 | 0.77a |
| Transfusion reactions (n) | 0 | 0 | 1b |
| Donors (n) | 77 | 100 | |
| Sex (m/f) | 56/21 | 47/53 | <0.001b |
| Age (years), median | 59 | 53.5 | <0.001a |
| IQR | 51–67 | 38.75–60.25 | |
| Range | 29–87 | 21–77 | |
| Donations (n) | 102 | 102 | |
| Sex (m/f) | 75/27 | 48/54 | <0.001b |
| Age (years), median | 59 | 52.5 | <0.001a |
| IQR | 52–66 | 38.25–60 | |
| Donor Hb before donation (g/dL) | 15.55 ± 1.31 | 14.46 ± 1.34 | <0.001a |
| Male (g/dL) | 15.91 ± 1.24 | 15.07 ± 1.38 | <0.001c |
| Female (g/dL) | 14.54 ± 0.92 | 13.93 ± 1.04 | 0.009c |
| Donation interval for 102 donations | |||
| First-time donation (n) | 4 | 21 | <0.001b |
| ≥120 days since last donation (n) | 56 | 38 | |
| Interval (days), mean ± SD | 484 ± 762 | 336 ± 468 | 0.24c |
| <120 days since last donation (n) | 42 | 43 | |
| Interval (days), mean ± SD | 72.83 ± 32.86 | 75.67 ± 18.74 | 0.62c |
Abbreviations: IQR, interquartile range (25%–75%); SD, standard deviation.
a
Wilcoxon signed-rank W test.
b
Fisher’s exact test.
c
Mann–Whitney U test.