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Table 3 The mean differences of (VAS for leg pain) between pre-operative and post-operative assessments in four time periods

From: Open fenestration discectomy versus microscopic fenestration discectomy for lumbar disc herniation: a randomized controlled trial

Study variablesPeriods of assessmentNMeanSDP-value
VAS for leg painVAS for leg pain preoperatively309.630.49< 0.001*
VAS for leg pain 1 weeks postoperatively301.460.50
VAS for leg pain 3 months postoperatively300.560.50
VAS for leg pain 6 months postoperatively300.000.000
VAS for leg pain 12 months postoperatively300.000.000
  1. Friedman Test, P ≤ 0.05 was significant