Table 4.
Baseline Characteristics of Transfusion Recipients by Age, Sex, Transfusion Volume, and Surgical Specialty in 2004 and 2011
| Characteristics | Overall (N = 3,379) |
2004 (n = 1,817) |
2011 (n = 1,562) |
P Value* |
|---|---|---|---|---|
| Age, median (IQR), yr* | 66 (54 to 76) | 67 (54 to 76) | 65 (54 to 75) | .004 |
| Male sex* | 1,614 (47.8) | 858 (47.2) | 756 (48.4) | .049 |
| Intraoperative transfusion volume, median (IQR), ml |
660 (350 to 1,200) | 639 (350 to 1,050) | 660 (330 to 1,028) | .070 |
| Surgical specialty | <0.001 | |||
| Abdominal | 994 (27.9) | 481 (26.5) | 463 (29.6) | |
| OB/GYN | 293 (8.7) | 157 (8.6) | 136 (8.7) | |
| Neurologic | 99 (2.9) | 45 (2.5) | 54 (3.5) | |
| Orthopedic | 673 (19.9) | 401 (22.1) | 272 (17.4) | |
| Spine | 249 (7.4) | 114 (6.3) | 135 (8.6) | |
| Thoracic | 133 (3.9) | 59 (3.2) | 74 (4.7) | |
| Transplant | 178 (5.3) | 81 (4.5) | 97 (6.2) | |
| Urology | 279 (8.3) | 154 (8.5) | 125 (8.0) | |
| Vascular | 375 (11.1) | 248 (13.6) | 127 (8.1) | |
| Other | 156 (4.6) | 77 (4.2) | 79 (5.1) |
Values are numbers (percentage) unless indicated otherwise.
*
P values compare medians and frequencies between 2004 and 2011 using the t test and the chi-square test, respectively.
IQR = interquartile range; OB/GYN = obstetrics and gynecology.