On page 199 of the 3 January 2013 issue, there are errors in Table 1: 2 column headings are omitted. The column heading “Bone marrow” should span columns 2 and 3. In addition, the column heading “PBSC” should span columns 4 and 5.
Table 1.
Characteristics of first-time NMDP donors who donated a stem cell product between January 2004 and July 2009
| Characteristic | Bone marrow | PBSC | P | ||
|---|---|---|---|---|---|
| N | % | N | % | ||
| No. of donors | 2726 | 6768 | |||
| No. of donor centers | 81 | 76 | |||
| No. of collection centers | 83 | NA | |||
| No. of apheresis centers | NA | 98 | |||
| Donor sex | .168 | ||||
| Male | 1638 | 60 | 4170 | 62 | |
| Female | 1088 | 40 | 2598 | 38 | |
| Donor race/ethnicity | <.001 | ||||
| White | 1935 | 71 | 5083 | 75 | |
| Hispanic | 294 | 11 | 582 | 9 | |
| Black | 165 | 6 | 320 | 5 | |
| Asian/Pacific Islander | 144 | 5 | 294 | 4 | |
| American Indian/Alaska Native | 42 | 2 | 77 | 1 | |
| Other/multiple race | 130 | 5 | 351 | 5 | |
| Decline/unknown | 16 | 1 | 61 | 1 | |
| Donor age at donation, y | .100 | ||||
| 18-30 | 973 | 36 | 2380 | 35 | |
| 31-40 | 878 | 32 | 2202 | 33 | |
| 41-50 | 684 | 25 | 1616 | 24 | |
| 51-61 | 191 | 7 | 570 | 8 | |
| Median, range | 35 | 18-61 | 35 | 18-61 | .377 |
| Donor BMI, kg/m2 | .646 | ||||
| Underweight (<18.5) | 14 | 1 | 41 | 1 | |
| Normal (18.5-24.9) | 825 | 30 | 1970 | 29 | |
| Overweight (25-29.9) | 1044 | 38 | 2659 | 39 | |
| Obese (≥30) | 843 | 31 | 2097 | 31 | |
| Unknown | 0 | 1 | NA | ||
| Median, range | 27.4 | 16.1-50.9 | 27.4 | 16.2-56.2 | .899 |
| Donor CMV | <.001 | ||||
| Nonreactive | 1554 | 57 | 4124 | 61 | |
| Reactive | 1172 | 43 | 2642 | 39 | |
| Unknown/indeterminate | 0 | 2 | NA | ||
| Donor WBC counts at baseline | |||||
| Median, range | 6.4 | 2.3-14.2 | 6.3 | 2.3-16.0 | .544 |
| Donor neutrophil counts at baseline | |||||
| Median, range | 4.0 | 1.0-12.5 | 4.0 | 1.0-12.9 | .276 |
| Donor MNC counts at baseline | |||||
| Median, range | 2.3 | 0.9-7.2 | 2.3 | 0.3-7.3 | .633 |
| Donor platelet counts at baseline | |||||
| Median, range | 254 | 104-534 | 254 | 100-548 | .869 |
| Donor hemoglobin level at baseline | |||||
| Male, median, range | 15.3 | 11.1-18.3 | 15.3 | 10.9-19.0 | .800 |
| Female, median, range | 13.5 | 8.6-19.0 | 13.4 | 9.4-16.5 | .886 |
| Year of donation | <.001 | ||||
| 2004 | 491 | 18 | 814 | 12 | |
| 2005 | 449 | 16 | 1102 | 16 | |
| 2006 | 479 | 18 | 1188 | 18 | |
| 2007 | 471 | 17 | 1297 | 19 | |
| 2008 | 537 | 20 | 1497 | 22 | |
| 2009 | 299 | 11 | 870 | 13 | |
NMDP indicates National Marrow Donor Program; NA, not applicable; and WBC, white blood cell.
Furthermore, there is an error in the text of Table 1. In the “No. of donors” row under the “Bone marrow, N” column, the number of doctors should read “2726” and not “272.” The corrected Table 1 and original table footnote are shown.