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Table 4 The changes in the ODI at the 12th month evaluation visit

From: Short-segment posterior fixation with index level screws versus long-segment posterior fixation for thoracolumbar spine fracture: angle of correction and pain

Paired sample test
  Paired differences t df Sig. (two-tailed)
Mean Std. deviation Std. error mean 95% confidence interval of the difference
Lower Upper
short_segment 10.45455 9.38939 1.41550 7.59991 13.30918 7.386 43 .000
long_segment 9.78723 10.05190 1.46622 6.83589 12.73858 6.675 46 .000