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Table 4 Correlations between the predictor candidates and postoperative VAS scores

From: Identifying predictors for postoperative clinical outcome in lumbar spinal stenosis patients using smart-shoe technology

Type Predictors r p-value
Spatiotemporal measurements AutoCorr-P2-Mean −0.70 0.0035
  CrossCorr-P2 −0.69 0.0044
  AutoCorr-P5-Min −0.63 0.012
  SumMag-P2-Min 0.61 0.015
  MeanTime-P1P2-Max 0.60 0.017
Clinical variables Age 0.33 0.22
  Gender 0.21 0.44
  Duration of symptoms 0.30 0.28
  Walking ability −0.10 0.72
  Presence of scoliosis 0.12 0.66
  Smoking status 0.45 0.089
  Acute injury −0.35 0.20
  Previous spine surgery 0.47 0.076
  Number of affected disk 0.0045 0.87
  BMI 0.45 0.093
Preoperative outcomes Preoperative VAS 0.38 0.16
  Preoperative ODI 0.30 0.27
  1. Top five spatiotemporal measurements with the largest absolute Spearman correlation coefficients (r) are listed. All clinical variables, including the functional outcomes that were collected preoperatively, are also listed