Table 4.

Visual analogue scale (VAS) for Pain

Time (weeks)	Group A	Group B	Group C	Group D	P value
	(n = 98)	(n = 439)	(n = 443)	(n = 108)
2	5.0 ± 0.5	2.1 ± 1.0	1.7 ± 0.9	1.9 ± 0.6	< 0.001
4	1.9 ± 0.8	0.9 ± 1.1	0.8 ± 0.6	0.9 ± 0.6	< 0.001
6	0.2 ± 0.4	0.4 ± 0.9	0.3 ± 0.7	0.2 ± 0.6	0.531
8	0	0	0.2 ± 0.4	0.1 ± 0.3	< 0.001

Data represent the mean [SD].