Table 2.

Pain VAS score values

	N	Mean score	SD	p value*
Baseline	49	7.9	2.3
1 week	46	3.4	2.6
1 month	45	2.9	3.1
3 months	45	3.2	3.3
6 months	42	2.5	2.8
1 year	36	2.0	2.8
2 years	31	1.5	2.2
Change at 1 week	46	-4.6	3.1	< 0.001
Change at 1 month	45	-5.0	3.4	< 0.001
Change at 3 months	45	-4.6	3.9	< 0.001
Change at 6 months	42	-5.4	3.3	< 0.001
Change at 1 year	36	-5.6	3.0	< 0.001
Change at 2 years	31	-6.5	3.4	< 0.001

SD standard deviation, VAS: visual analog scale of 0–10, where 0 means no pain and 10 means severe pain, *: Paired-Samples t-Student and Wilcoxon Signed-Rank Test