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Table 1 Demographic and clinical characteristics at the first medical examination

From: Classifying patients with lumbar spinal stenosis using painDETECT: a cross-sectional study

Characteristic Nociceptive pain Type of pain unclear (mixed pain) Neuropathic pain p a
Age (years) 71.4 ± 1.36 69.0 ± 2.34 68.3 ± 2.91 0.720
Sex     0.572
 Male 18 11 8  
 Female 41 14 10  
Duration of pain     0.914
3 months 41 17 14  
 <3 months 18 8 4  
Affected spinal level     0.730
 L3–L4 18 9 3  
 L4–L5 36 16 15  
 L5–S1 5 0 0  
NIC type     0.668
 Radicular 41 15 14  
 Caudal 5 4 0  
 Mixed 13 6 4  
Spinal stenosis levels involvedb     0.373
 1 28 8 6  
 2 25 11 8  
 ≥3 6 6 4  
Cause of LSS     0.672
 Lumbar spondylitis 30 15 11  
  Degenerative spondylolisthesis 20 8 6  
 Degenerative scoliosis 9 2 1  
  1. The demographic and clinical characteristics of the patients with LBP and/or leg pain caused by LSS were similar among the three pain subgroups
  2. LBP low back pain, LSS lumbar spinal stenosis, NIC neurogenic intermittent claudication, LDH lumbar disc degeneration, MRI magnetic resonance imaging
  3. aKruskal–Wallis test
  4. bSeen on MRI