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Table 2 Correlation of retrospective 3-point surgical outcome and prospective follow-up measures (N =100)

From: Accuracy and reproducibility of a retrospective outcome assessment for lumbar spinal stenosis surgery

  3-month follow-up
ODI r = 0.528, P = 0.000
BDI r = 0.300, P = 0.002
VAS r = 0.368, P = 0.000
  1. P = P values
  2. r = Spearman correlation coefficients
  3. ODI = Oswestry disability index
  4. BDI = Beck depression index
  5. VAS = Visual analogue pain scale