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Table 5 Subgroups

From: The Felix-trial. Double-blind randomization of interspinous implant or bony decompression for treatment of spinal stenosis related intermittent neurogenic claudication

Subgroups Variables
Demographics age < 70 years versus > 70 years
  women versus men
Anamnestic and neurological variables short versus long history of back pain
  more leg pain versus more back pain
Radiological variables soft versus bony stenosis
  extent of stenosis during MRI examination
  1. Subgroups bases on the following variables.