Table 1 Patients’ characteristics

Age (years)

79.6 ± 8.8

83.3 ± 6.9

0.009

Sex

Male, 14; Female, 48

Male, 15; Female, 60

0.44

ASA classification

ASA2: 55,

ASA2: 60,

0.24

ASA3: 7

ASA3: 15

Preoperative waiting period (days)

3.9 ± 2.6

5.5 ± 5.8

0.03

MMSE

22.7 ± 7.5

17.9 ± 8.5

0.001

Intraoperative blood loss (mL)

169.7 ± 116.8

176.5 ± 111.9

0.71

Surgery time (min)

90.1 ± 25.2

81.4 ± 25.8

0.05

preoperative Hemoglobin levels (g/dL)

12.8 ± 1.5

11.6 ± 1.2

P < 0.001

postoperative Hemoglobin levels (g/dL)

10.3 ± 1.5

9.0 ± 1.3

P < 0.001

Blood transfusion rate (%)

12.9

41.3

P < 0.001

Transfer rate (%)

9.7

24

0.02

Percentage of patients unable to walk at discharge or transfer (%)

11

25.3

0.03

Percentage of patients unable to walk on 6-month (%)

13

41.3

P < 0.001

Complication rate (%)

35.5

52

0.04

6-month mortality rate (%)

0

13.3

0.002