Table 2. Patient-Level Outcomes at Follow-up.
| Variable | Interventiona | ||||
|---|---|---|---|---|---|
| Content | Support | All | |||
| Standard | Enhanced | Standard | Enhanced | ||
| Surgical trial | |||||
| Entire national audit sample, No. | 1224 | 998 | 1118 | 1104 | 2222 |
| Primary outcome | |||||
| Appropriate | 198 (16.2) | 152 (15.2) | 176 (15.7) | 174 (15.8) | 350 (15.8) |
| Inappropriate | 901 (73.6) | 726 (72.7) | 822 (73.5) | 805 (72.9) | 1627 (73.2) |
| Unclassified: hemoglobin level missing | 125 (10.2) | 120 (12.0) | 120 (10.7) | 125 (11.3) | 245 (11.0) |
| Secondary outcome | |||||
| Total volume of blood transfused, mean (SD) [No. of patients contributing] | 2.0 (1.2) [1147] | 2.2 (1.7) [921] | 2.1 (1.6) [1052] | 2.1 (1.3) [1016] | 2.1 (1.5) [2068] |
| Hematological trial | |||||
| Entire national audit sample, No. | 1926 | 1933 | 1779 | 2080 | 3859 |
| Primary outcome | |||||
| Appropriate | 1308 (67.9) | 1226 (63.4) | 1196 (67.2) | 1338 (64.3) | 2534 (65.7) |
| Inappropriate | 457 (23.7) | 507 (26.2) | 433 (24.3) | 531 (25.5) | 964 (25.0) |
| Unclassified | 161 (8.4) | 200 (10.3) | 150 (8.4) | 211 (10.1) | 361 (9.4) |
| Red blood cell transfusions, No. | 1815 | 1832 | 1674 | 1973 | 3647 |
| Secondary outcome | |||||
| Volume transfused, median (IQR) [No. of patients contributing] | 2.0 (1.0-2.0) [1813] | 2.0 (1.0-2.0) [1829] | 2.0 (1.0-2.0) [1671] | 2.0 (1.0-2.0) [1971] | 2.0 (1.0-2.0) [3642] |
| Platelet transfusions, No. | 729 | 717 | 633 | 813 | 1446 |
| Secondary outcome | |||||
| Volume transfused, median (IQR) [No. of patients contributing] | 1.0 (1.0-1.0) [716] | 1.0 (1.0-1.0) [705] | 1.0 (1.0-1.0) [626] | 1.0 (1.0-1.0) [795] | 1.0 (1.0-1.0) [1421] |
a
Unless otherwise indicated, data are expressed as number (%) of patients.