Table 2.

Transfusion and laboratory data

Parameter	THA	THA	TKA	TKA
	2007	2008	2007	2008
Number of patients	89	109	145	150
Number transfused	12 (13.5%)	4 (3.6%)*	19 (13.4%)	3 (2.0%)*
Hb preoperative (g/L)†	139 ± 12	139 ± 11	139 ± 11	139 ± 11
Hb discharge (g/L)†	99 ± 14	102 ± 13	97 ± 10	104 ± 12*
Hb change (g/L)†	46 ± 12	39 ± 12*	45 ± 12	36 ± 11*

* Significant difference from 2007 (p < 0.05); ^†values are expressed as mean ± SD; Hb = hemoglobin.