Transfused patient characteristics
| . | . | . | . | Episodic category . | Chronic category . | ||||
|---|---|---|---|---|---|---|---|---|---|
| . | Overall demographics . | Episodic category . | Chronic category . | Alloimmunized . | Nonalloimmunized . | P value . | Alloimmunized . | Nonalloimmunized . | P value . |
| No. of patients | 182 | ||||||||
| Male/female | 112/70 (61.5% male) | ||||||||
| Median age (years) | 15.7 (range 0.5-41) | ||||||||
| Transfusion category | |||||||||
| No. of patients (%) | 59 (32.4) | 123 (67.6) | |||||||
| Donor RBC exposures (units) | |||||||||
| Mean | 4.6 | 354 | |||||||
| Median | 3 | 230 | |||||||
| Range | 1-15 | 10-1460 | |||||||
| Total for group | 272 | 44 210 | |||||||
| Alloimmunization status | |||||||||
| No. of patients (%) | 9 (15.2) | 50 (84.8) | NA | 71 (57.7) | 52 (42.3) | NA | |||
| No. of male patients (%) | 3 (33.3) | 28 (56.0) | .317 | 48 (67.6) | 30 (57.7) | .003 | |||
| Mean age (years) | 14.5 | 11.6 | .200 | 19.1 | 15.7 | .007 | |||
| Mean age at first transfusion (years) | 3.9 | 5.3 | .327 | 6.5 | 6.8 | .755 | |||
| Donor RBC exposures (units) | |||||||||
| Mean | 8.9 | 3.8 | <.001 | 408.6 | 292.3 | .045 | |||
| Median | 9 | 2.5 | <.001 | 309 | 192.5 | .008 | |||
| Range | 3-15 | 1-12 | NA | 12-1263 | 10-1460 | NA | |||
| Total for group | 80 | 192 | NA | 29 009 | 15 201 | NA | |||
| . | . | . | . | Episodic category . | Chronic category . | ||||
|---|---|---|---|---|---|---|---|---|---|
| . | Overall demographics . | Episodic category . | Chronic category . | Alloimmunized . | Nonalloimmunized . | P value . | Alloimmunized . | Nonalloimmunized . | P value . |
| No. of patients | 182 | ||||||||
| Male/female | 112/70 (61.5% male) | ||||||||
| Median age (years) | 15.7 (range 0.5-41) | ||||||||
| Transfusion category | |||||||||
| No. of patients (%) | 59 (32.4) | 123 (67.6) | |||||||
| Donor RBC exposures (units) | |||||||||
| Mean | 4.6 | 354 | |||||||
| Median | 3 | 230 | |||||||
| Range | 1-15 | 10-1460 | |||||||
| Total for group | 272 | 44 210 | |||||||
| Alloimmunization status | |||||||||
| No. of patients (%) | 9 (15.2) | 50 (84.8) | NA | 71 (57.7) | 52 (42.3) | NA | |||
| No. of male patients (%) | 3 (33.3) | 28 (56.0) | .317 | 48 (67.6) | 30 (57.7) | .003 | |||
| Mean age (years) | 14.5 | 11.6 | .200 | 19.1 | 15.7 | .007 | |||
| Mean age at first transfusion (years) | 3.9 | 5.3 | .327 | 6.5 | 6.8 | .755 | |||
| Donor RBC exposures (units) | |||||||||
| Mean | 8.9 | 3.8 | <.001 | 408.6 | 292.3 | .045 | |||
| Median | 9 | 2.5 | <.001 | 309 | 192.5 | .008 | |||
| Range | 3-15 | 1-12 | NA | 12-1263 | 10-1460 | NA | |||
| Total for group | 80 | 192 | NA | 29 009 | 15 201 | NA | |||
NA, not applicable; bold indicates statistically significant (P < .05).