preferred_name: Leg pain measured by the visual analog scale (vas) or numeric pain scale at three months (6 - 20 weeks) postoperatively was less than or equal to 3.0 or leg pain measured by the visual analog scale (vas) or numeric pain scale within three months preoperatively and at three months (6 - 20 weeks) postoperatively demonstrated an improvement of 5.0 points or greater
preferred_name_lc: leg pain measured by the visual analog scale (vas) or numeric pain scale at three months (6 - 20 weeks) postoperatively was less than or equal to 3.0 or leg pain measured by the visual analog scale (vas) or numeric pain scale within three months preoperatively and at three months (6 - 20 weeks) postoperatively demonstrated an improvement of 5.0 points or greater
label: Leg pain vas 6-20wk <= 3
label_lc: leg pain vas 6-20wk <= 3