| Lab Evaluation |
All Patients n = 18,160 |
White Patients n = 7,160 |
Black Patients N = 6,238 |
P‐value |
|---|---|---|---|---|
| CBC or Hemoglobin | 11,902 (65.5) | 4,995 (69.8) | 3,669 (58.8) | < .001 |
| Any Iron Evaluation | 1,251 (6.9) | 568 (7.9) | 373 (6.0) | < .001 |
| Prothrombin Time/Partial Thromboplastin Time | 4,597 (25.3) | 2,061 (28.8) | 1,238 (19.8) | < .001 |
| Fibrinogen | 774 (4.3) | 325 (4.5) | 228 (3.7) | 0.010 |
| Von Willebrand Antigen | 1,584 (8.7) | 765 (10.7) | 404 (6.5) | < .001 |
| Von Willebrand Ristocetin Cofactor Activity | 1,553 (8.6) | 692 (9.7) | 429 (6.9) | < .001 |
| Factor VIII (Assay or Antigen) | 1,700 (9.4) | 821 (11.5) | 438 (7.0) | < .001 |
| Platelet Aggregation | 240 (1.3) | 110 (1.5) | 63 (1.0) | 0.007 |
| Other Factor Assays (II, V, VII, IX, X, XI, XII, XIII) | 47 (0.3) | 18 (0.3) | 13 (0.2) | 0.610 |
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