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. 2009 Apr 22;18(6):823–829. doi: 10.1007/s00586-009-0967-z

Table 1.

Visual analogue scale measurements (VAS) in the long-term follow-up after X-Stop implantation

Time point Mean Std. Dev. Range
Preoperative 61.163 29.799 20–100
6 weeks po. 38.965 30.040 0–100
6 months po. 35.854 29.616 0–100
12 months po. 38.571 30.659 0–100
24 months po. 39.000 28.326 0–75