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Table 1: 
VAS score and pain relief at the 2 week follow-up in terms of the radiculalgia cause
Total PopulationDegenerative StenosisHerniated DiscDegenerative Stenosis and Herniated Disc
No. of patients2294117216
Mean symptom duration (mo)6.36.566.2
Mean VAS score before procedure6.4876.36.6
Pain relief (no. of patients), n (%)
    Excellent4514 (32)29 (17)2 (12.5)
    Good488 (22)36 (21)4 (25)
    Fair455 (14)36 (21)4 (25)
    Poor9114 (32)71 (41)6 (37.5)
  • Note:—VAS indicates visual analog scale.