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

Table 4 Correlations between the predictor candidates and postoperative VAS scores

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

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

ISSN: 1743-0003