Table 2.

Univariate Cox proportional hazards models for the risk of bleeding death in the first 30 days

	No. included (no. of HD)	HR (95% CI)	P value
Age, y*	1009 (37)	1.07 (0.89-1.30)	.463
PT, s*	837 (33)	1.07 (1.00-1.14)	.054
WBC count, 1000 cells/μL*	999 (37)	1.07 (1.03-1.10)	<.001
WBC count (grouped)
High risk (≥20)	129 (16)	5.49 (2.86-10.52)	<.001
Low risk (<20)	870 (21)	REF
Platelet count, 1000 cells/μL*	999 (37)	0.91 (0.81-1.02)	.107
Platelet count (grouped)
High risk (<30)	484 (21)	1.41 (0.74-2.71)	.297
Low risk (≥30)	515 (16)	REF
Peripheral blast count, 1000 cells/μL*	870 (34)	1.12 (1.05-1.19)	<.001
PTT, s*	882 (37)	0.95 (0.79-1.15)	.627
Fibrinogen, mg/dL	861 (35)	1.00 (1.00-1.00)	.689
Hemoglobin, g/dL*	996 (37)	0.54 (0.10-2.83)	.464
Creatinine clearance, mL/min*	869 (36)	0.96 (0.86-1.07)	.495
ECOG performance status
Poor (3-4)	56 (5)	2.76 (1.07-7.08)	.035
Good (0-2)	939 (32)	REF
FAB classification
M3v	125 (8)	2.28 (0.99-5.29)	.054
M3	592 (17)	REF

Boldface indicates statistically significant results.

REF, reference level.

^*HR in terms of 10 unit increase.