TABLE 3.

Anemia and transfusion data: comparison of bloodless patients to matched control patients^*

Variable	All inpatients			All medical inpatients			All surgical inpatients
	Bloodless patients (n = 294)	Matched controls (n = 1157)	p value	Bloodless patients (n = 196)	Matched controls (n = 690)	p value	Bloodless patients (n = 98)	Matched controls (n = 467)	p value
Iron and EPO treatment
Prehospital IV iron	6 (2.0)	0	<0.0001	3 (1.5)	0	0.01	3 (3.1)	0	0.005
Prehospital EPO	5 (1.7)	0	0.0003	2 (1.0)	0	0.048	3 (3.1)	0	0.005
In-hospital IV iron	20 (6.8)	0	<0.0001	5 (2.6)	0	0.0005	15 (15.3)	0	<0.0001
In-hospital EPO	20 (6.8)	0	<0.0001	5 (2.6)	0	0.0005	15 (15.3)	0	<0.0001
Hb data
Admission Hb (g/dL)	12.0 ± 2.8	12.1 ± 2.4	0.60	11.9 ± 3.1	12.1 ± 2.6	0.40	12.2 ± 2.1	12.0 ± 2.2	0.65
Nadir Hb (g/dL)	10.2 ± 2.9	10.2 ± 2.6	0.75	10.5 ± 3.2	10.6 ± 2.7	0.68	9.7 ± 2.2	9.5 ± 2.3	0.60
Discharge Hb (g/dL)	10.8 ± 2.7	10.9 ± 2.3	0.42	11.0 ± 3.0	11.3 ± 2.4	0.19	10.3 ± 1.8	10.3 ± 1.9	0.92
Hb nadir < 5 g/dL	13 (4.4)	5 (0.4)	0.002	9 (4.5)	4 (0.6)	0.2	4 (4.3)	1 (0.2)	0.01
Cell salvage
Percentage of cases							40 (40.8)	28 (6.0)	0.001
Volume returned (mL)							310 ± 80	780 ± 1000	0.32
Estimated blood loss (mL)							135 ± 250	250 ± 890	0.22
Transfusion data
RBC transfusion rate	0	205 (17.7)	<0.0001	0	60 (8.7)	<0.0001	0	145 (31.1)	<0.0001
FFP transfusion rate	0	91 (7.9)	<0.0001	0	14 (2.0)	0.048	0	77 (16.5)	<0.0001
PLT transfusion rate	0	56 (4.8)	<0.0001	0	10 (1.5)	0.13	0	46 (9.9)	0.0002
Any allogeneic product	0	223 (19.3)	<0.0001	0	67 (9.7)	<0.0001	0	156 (33.4)	<0.0001
RBC units/patient	0	1.3 ± 5.6	<0.0001	0	0.4 ± 1.9	0.01	0	2.7 ± 8.3	0.001
FFP units/patient	0	0.7 ± 4.3	<0.0001	0	0.1 ± 1.1	0.02	0	1.6 ± 6.5	0.01
PLT units/patient	0	0.3 ± 2.1	<0.0001	0	0.2 ± 2.3	0.07	0	0.4 ± 1.6	0.02

^*All continuous data are given as mean ± SD. Other data are reported as number (%).