Characteristics of unrelated PBSC donors facilitated by the NMDP, 1999-2004
| Variable . | No. (%) . |
|---|---|
| No. of donors | 2408 |
| Sex | |
| Male | 1444 (60) |
| Female | 964 (40) |
| Race/ethnicity | |
| White | 1914 (79) |
| Hispanic | 189 (8) |
| Asian/Pacific Islander | 103 (4) |
| Black/African American | 77 (3) |
| Multiple races | 76 (3) |
| American Indian/Alaska Native | 27 (1) |
| Other/decline/unknown | 22 (1) |
| Age at donation, y | |
| 18-30 | 747 (31) |
| 31-40 | 846 (35) |
| 41-50 | 604 (25) |
| 51-60 | 211 (9) |
| BMI, kg/m2 | |
| Underweight, less than 18.5 | 14 (1) |
| Normal, 18.5-24.9 | 719 (30) |
| Overweight, 25-29.9 | 980 (41) |
| Obese, 30 or more | 694 (29) |
| Volume of whole blood processed, collection day 1, N = 2408 | |
| Small volume, less than 12 L | 368 (15) |
| Standard volume, 12-18 L | 1429 (59) |
| Large volume, 18 L or more | 606 (25) |
| Volume of whole blood processed, collection day 2, N = 1604 | |
| Small volume, less than 12 L | 423 (27) |
| Standard volume, 12-18 L | 1146 (72) |
| Large volume, 18 L or more | 16 (1) |
| Variable . | No. (%) . |
|---|---|
| No. of donors | 2408 |
| Sex | |
| Male | 1444 (60) |
| Female | 964 (40) |
| Race/ethnicity | |
| White | 1914 (79) |
| Hispanic | 189 (8) |
| Asian/Pacific Islander | 103 (4) |
| Black/African American | 77 (3) |
| Multiple races | 76 (3) |
| American Indian/Alaska Native | 27 (1) |
| Other/decline/unknown | 22 (1) |
| Age at donation, y | |
| 18-30 | 747 (31) |
| 31-40 | 846 (35) |
| 41-50 | 604 (25) |
| 51-60 | 211 (9) |
| BMI, kg/m2 | |
| Underweight, less than 18.5 | 14 (1) |
| Normal, 18.5-24.9 | 719 (30) |
| Overweight, 25-29.9 | 980 (41) |
| Obese, 30 or more | 694 (29) |
| Volume of whole blood processed, collection day 1, N = 2408 | |
| Small volume, less than 12 L | 368 (15) |
| Standard volume, 12-18 L | 1429 (59) |
| Large volume, 18 L or more | 606 (25) |
| Volume of whole blood processed, collection day 2, N = 1604 | |
| Small volume, less than 12 L | 423 (27) |
| Standard volume, 12-18 L | 1146 (72) |
| Large volume, 18 L or more | 16 (1) |
PBSC indicates peripheral blood stem cell; NMDP, National Marrow Donor Program; and BMI, body mass index.