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Table 3 Time course changes of bilateral VAS

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
LBP
 on affected side 46.9 (34.0)* 11.2 (16.0) 12.3 (19.0) 13.8 (20.1)
 on opposite side 17.4 (27.0) 7.20 (13.4) 9.22 (18.3) 12.7 (20.6)
LEP
 on affected side 77.5 (25.2)** 16.6 (21.6) 10.0 (15.4) 8.92 (15.2)
 on opposite side 12.0 (27.5) 5.13 (13.3) 4.53 (11.6) 5.77 (13.0)
LEN
 on affected side 62.7 (32.7)† 13.4 (19.4) 10.7 (15.7) 11.4 (17.6)
 on opposite side 12.3 (28.0) 3.63 (11.6) 3.36 (8.73) 2.74 (12.4)
  1. Reported as mean (SD)
  2. * Significantly higher than LBP on opposite side (t(64) = 6.848, p < 0.001)
  3. ** Significantly higher than LEP on opposite side (t(64) = 14.32, p < 0.001)
  4. † Significantly higher than LEN on opposite side (t(64) = 10.28, p < 0.001)