Group A  
Number of patients 40 20
Mean Age (years ) 67.3 66,2
Male/Female (n,%) 23/40 Dec-20
ASA physical classification 02-Mar 02-Mar
THA (n,% ) 19(47%) 10 (50%)
TKA (n,%) 21(53%) 10 (50%)
Mean Hb in CE (g/dL ) 12.3 12.7
ASA: American Society of Anesthesiologists; CE: Clinical Examination
Table 1: Patient demographics and surgical characteristics (San Camillo-Forlanini Hospital).