Table 2.

Summary of patient-reported pain-visual analogue scale (VAS) scores by visit (per-protocol population)

Visit	Number of patients	Mean ± SD	95% confidence intervals	Median
Baseline	47	6.0 ± 1.9	5.4–6.5	6.0
2 months	47	2.2 ± 1.5	1.8–2.7	2.0
6 months	47	1.7 ± 1.2	1.3–2.0	1.5
12 months	47	2.0 ± 1.8	1.4–2.5	1.7
24 months	47	1.9 ± 1.7	1.4–2.4	1.5
48 months	47	2.8 ± 2.6	2.1–3.6	2.0