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Propensity matching factors
| Factor | UFH (n = 503) | LMWH (n = 503) | P |
|---|---|---|---|
| Anemia | 45.8% | 54.2% | .238 |
| African American | 49.3% | 50.7% | .50 |
| Laparoscopic procedure | 49.8% | 50.02% | .475 |
| Transfusion | 51.4% | 48.6% | .500 |
LMWH, Low molecular weight heparin; UFH, unfractionated heparin.
