Variable

Group

Mean

Stand. Deviation

Age (years)

CG-A

37.5

14.7

PI-PI

41.8

15.1

Duration of preoperative admission (days)

CG-A

5.3

5.0

PI-PI

6.2

5.1

Duration of postoperative admission (days)

CG-A

8.6

3.7

PI-PI

9.7

4.6