Table 5 Differences of 18 months vs. preoperative and of 6 months vs. preoperative: Comparison of the different subgroups

11 days

6 weeks

p-value

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p-value

Age > 40

Age ≤ 40

p-value

PCS

16.3 ± 15.0

14.1 ± 13.9

n.s.

14.8 ± 14.3

15.8 ± 14.9

n.s.

14.0 ± 13.4

21.7 ± 18.4

p < 0.05*

MCS

4.8 ± 12.7

1.9 ± 16.4

n.s.

1.6 ± 16.0

5.4 ± 12.8

n.s.

4.0 ± 13.0

2.6 ± 16.6

n.s.

11 days

6 weeks

p-value

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p-value

Age > 40

Age ≤ 40

p-value

PCS

10.2 ± 14.2

8.0 ± 2.3

n.s.

11.4 ± 12.7

7.0 ± 16.3

n.s.

8.3 ± 13.4

13.3 ± 3.8

n.s.

MCS

2.9 ± 13.3

1.0 ± 10.1

n.s.

2.3 ± 10.9

1.7 ± 13.3

n.s.

2.7 ± 12.3

−1.4 ± 11.1

n.s.