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Table 3 Differences between foot dimensions obtained with 3D foot scanner and corresponding shoe last dimensions

From: Evaluation of the accuracy of shoe fitting in older people using three-dimensional foot scanning

  3D foot scanner mean (95% CI) Shoe last mean (95% CI) Mean difference (95% CI)* pvalue
Length 255.0 (250.3 to 259.7) 278.7 (273.3 to 284.0) 23.6 (22.1 to 25.2) <0.001
Ball width 93.8 (92.2 to 95.4) 95.6 (93.6 to 96.7) 1.4 (−0.1 to 2.9) 0.066
Ball girth 260.4 (254.4 to 266.3) 259.7 (255.1 to 264.3) −0.7 (−6.1 to 4.8) 0.810
  1. CI = confidence interval.
  2. *positive value indicates shoe dimension larger than foot.