Table 4.

Confounders with potential to increase bleeding rates on intravenous heparin therapy in renal transplant and nontransplant patients

	Transplant (n = 29)	Nontransplant (n = 29)
Home anticoagulant or antiplatelet	12 (41.4%)	16 (65.5%)
Concomitant
Warfarin	18 (62.1%)	20 (69%)
Aspirin	6 (20.7%)	10 (34.5%)
Clopidogrel	2 (6.9%)	6 (20.1%)
Corticosteroid	29 (100%)	0
Enoxaparin	8 (27.6%)	6 (20.7%)
Surgery during heparin therapy	16 (55.1%)	8 (27.6%)
Mean hemoglobin at heparin initiation, g/dL	10.8	12
Mean liver function
AST	44.7 (range, 15-174)	44.5 (range, 15-178)
ALT	42.3 (range, 10-260)	44.2 (range, 8-271)
Total bilirubin	0.63 (range, 0.2-1.8)	0.68 (range, 0.2-1.5)
Mean SCr*	2.12 (range, 0.6-6.86)	1.4 (range, 0.43-8.91)

Note: Values given as n (%), unless otherwise noted. Chi-square analysis was completed for home anticoagulant or antiplatelet therapy, concomitant medications, and presence of surgery. Student t test was used for all laboratory values with a normal distribution, and Mann-Whitney test was used for all laboratory values with a non-normal distribution. ALT = alanine aminotransferase; AST = aspartate aminotransferase; SCr = serum creatinine.

*P = .007.