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Table 4 Efficacy evaluation

From: Caudal epidural steroid injections versus selective nerve root blocks for single-level lumbar spinal stenosis: a study protocol for a randomized controlled trial

Cured: neither CESI nor SNRB cured LSS
Marked effect: NRS score < 2 points or ODI score < 50%
Effective: NRS score 2–4 points or ODI score 50–70%
Relapse: NRS score > 4 points or ODI score > 70% or the use of analgesics of the patient’s own choice
  1. Note: We will record the time a patient has recurrence and stop follow-up
  2. CESI, caudal epidural steroid injection; SNRB, selective nerve root block; LSS, lumbar spinal stenosis; NRS, numeric rating scale; ODI, Oswestry Disability Index