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Table 2 Self-report assessment of lumbar traction according to qualitative analysis

From: Lumbar mechanical traction: a biomechanical assessment of change at the lumbar spine

  Assessment for 3 days  
  Improved Changeless Worsened total
Traction A 78 11 6 95
Traction B 79 12 4 95
total 157 23 10 190
  1. Mantel-Haenszel Chi-Square for 2 x r table. QS (Mean score statistic) = 0.168, p = 0.682
  2. Both A mode and B mode showed improvement in 78 (82.1%) and 79 (83.2%). There was no difference between two modes (p = 0.682)