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Table 2 Summary of clinical outcomes of the two groups

From: Follow-up results of microendoscopic discectomy compared to day surgery using percutaneous endoscopic lumbar discectomy for the treatment of lumbar disc herniation

Observation variables PELD MED P value
Blood loss (mL) 10.8 ± 9.0 71.3 ± 23.3 <  0.001
Operating time (min) 78.5 ± 32.6 81.1 ± 13.3 0.406
Hospital stay (hours) 22.7 ± 4.2 48.1 ± 22.7 <  0.001
VAS-B 0.8 ± 0.4 1.1 ± 0.7 0.001
VAS-L 0.6 ± 0.4 0.8 ± 0.6 0.224
ODI (%) 12.9 ± 3.2 15.1 ± 10.3 0.220
Complications rate (%) 9.4 12.1 0.471
Overall recurrence rate (%) 6.7 6.0 0.201
One-year recurrence rate (%) 5.2 0.9 0.042
  1. PELD Percutaneous endoscopic lumbar discectomy, MED Microendoscopic discectomy, VAS-B Visual analogue scale for the back, VAS-L Visual analogue scale for the legs, ODI Oswestry dysfunction index