Measurement time

Minimum

Maximum

Mean

Standard deviation

IVSRO*

(n = 30)

Before surgery

28

32

30.5

1.4

1 week after surgery

30

34

31.4

1.3

12 weeks after surgery

30

33

31.4

1

BSSRO**

(n = 30)

Before surgery

29

34

31.6

1.6

1 week after surgery

31

34

32.1

1

12 weeks after surgery

30

34

32.4

1.2