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Table 5 Multiple regression models and simple regression, in which independent variables are excess of indoor footwear, while dependent variables are features of the foot structure

From: Influence of footwear fitting on feet morphology in 9 year old girls

Excess of footwear Multiple regression Simple regression
R R2 F p b rp p
Summary of dependent variable regression: Clarke’s angle of the right foot [°]
 Length 0.05 0.00 0.15 0.864 0.03 0.01 0.925
 Width 0.11 0.04 0.689
Summary of dependent variable regression: Clarke’s angle of the left foot [°]
 Length 0.10 0.01 0.52 0.591 0.05 0.01 0.878
 Width 0.17 0.08 0.419
Summary of dependent variable regression: Wejsflog index of the right foot
 Length 0.41 0.17 10.37 < 0.001* −0.02 −0.39 < 0.001*
 Width 0.00 0.07 0.468
Summary of dependent variable regression: Wejsflog index of the left foot
 Length 0.46 0.21 13.02 < 0.001* − 0.01 − 0.43 < 0.001*
 Width 0.01 0.37 < 0.001*
Summary of dependent variable regression: heel angle (γ) of the right foot [°]
 Length 0.16 0.03 1.26 0.285 0.07 0.09 0.326
 Width 0.03 0.05 0.591
Summary of dependent variable regression: heel angle (γ) of the left foot [°]
 Length 0.32 0.10 5.38 0.006* 0.19 0.31* 0.001*
 Width −0.04 −0.13 0.194
Summary of dependent variable regression: hallux valgus angle (α) of the right foot [°]
 Length 0.13 0.02 0.88 0.414 0.17 −0.12 0.204
 Width 0.13 0.10 0.320
Summary of dependent variable regression: hallux valgus angle (α) of the left foot [°]
 Length 0.12 0.02 0.73 0.480 0.16 0.12 0.254
 Width −0.07 −0.09 0.363
Summary of dependent variable regression: the angle of the varus deformity of the fifth toe (β) of the right foot [°]
 Length 0.21 0.05 2.36 0.098 −0.00 − 0.00 0.986
 Width 0.27 0.19 0.066
Summary of dependent variable regression: the angle of the varus deformity of the fifth toe (β) of the left foot [°]
 Length 0.16 0.03 1.35 0.262 0.31 0.16 0.116
 Width −0.04 −0.04 0.698
  1. R – coefficient of multiple correlation; R2 – coefficient of determination; F – the Fisher-Snedecor test; b – the slope of the regression line; rp – partial correlation; p – probability value
  2. * p < 0.05