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Table 2 Comparative data between part and full time braced patients at baseline, short and long-term follow-up

From: Curve progression 25 years after bracing for adolescent idiopathic scoliosis: long term comparative results between two matched groups of 18 versus 23 hours daily bracing

   Mode of application  
   Part Time Full Time p value
Baseline characteristics at brace application
Index age of first time applicationa 13.24 (±1.9) 13.19 (±1.49) 0.55c
Onset of menstruationa 12.52 (±0.95) 12.48(±1.17) 0.70c
Curve magnitude (Cobb angle/ out of brace)a 28.71 (±9.02) 27.86 (±8.58) 0.84c
Curve typeb Thoracic 12 (34.3) 18 (42.9) 0.38d
  Thoracolumbar 12 (34.3) 9 (21.4)  
  Lumbar 2 (5.7) 6 (14.3)  
  Double primary 9 (25.7) 9 (21.4)  
Rotation of the apical vertebra (Perdriolle score)a 15.09 (±6.9) 13.69 (±6.48) 0.40c
Curve magnitude (Cobb angle/ in-brace correction) after first brace applicationa 18.2 (±8.46) 16.55 (±9.9) 0.32c
Initial curve correction after brace applicationa −10.17 (±7.36) −11.31 (±5.8) 0.65c
Short Term Follow Up (post bracing)
Age at brace removala 16.07 (±1.09) 15.8 (±1.34) 0.40c
Duration of brace applicationa 2.82 (±1.59) 2.61 (±0.97) 0.95c
Curve magnitude (Cobb angle/ out of brace) at brace removala 20.43 (±10.3) 22.55 (±13.03) 0.51c
Curve correction at brace removal compared with pre-brace anglea −8.26 (±9.58) −5.31 (±9.34) 0.09c
Long Term Follow Up ( 25 years post bracing)
Time since brace removala 24.95 (±2.45) 25.34 (±2.89) 0.10c
Curve magnitude (Cobb angle) at Long Term Follow Upa 24.37 (±12.4) 26.4 (±15.08) 0.58c
Type of main scoliotic curveb Single thoracic 11 (31.4) 14 (33.3) 0.88d
  Double Thoracic 2 (5.7) 3 (7.1)  
  Double Major 8 (22.9) 12 (28.6)  
  Triple major 3 (8.6) 2 (4.8)  
  Thoracolumbar 8 (22.9) 6 (14.3)  
  Lumbar 3 (8.6) 5 (11.9)  
Rotation of the apical vertebra (Perdriolle score)a 13.66 (±9.03) 14.86 (±9.01) 0.52c
Loss of main curve correction from brace removal to Long Term Follow Upa 3.94 (±6.43) 3.86 (±6.98) 0.87c
Loss of correction > 5 degreesb 10 (28.6) 17 (40.5) 0.27d
  1. aThe values are given as the mean with the standard deviation in parentheses
  2. bThe values are given as raw numbers with the percentages in parentheses
  3. cTest performed using Mann–Whitney test
  4. dTest performed using x2 test
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