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Table 4 Time course changes of ODI

From: Characteristics of relief and residual low back pain after discectomy in patients with lumbar disc herniation: analysis using a detailed visual analog scale

  Before surgery 3 months after surgery 6 months after surgery 1 year after surgery
ODI 51.2 (20.2) 14.3 (12.6) 12.3 (19.0) 13.8 (20.1)*
  1. Reported as mean (SD)
  2. * Significantly improved by surgery (t(64) = 14.06, p < 0.001)