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Table 4 Multivariable linear regression models for foot orthoses at weeks 4 and 12

From: Predictors of response to foot orthoses and corticosteroid injection for plantar heel pain

Dependent variable

 

Unstandardised coefficients

Standardised coefficients

    

Modela

β

SE β

β

t-value

P-valueb

R2

Adjusted R2

Week 4

 Foot pain

Ankle dorsiflexion – knee extended

0.813

0.377

0.309

2.15

0.037

0.25

0.16*

 Foot function

FACS

−0.271

0.132

−0.318

−2.06

0.047

0.49

0.43*

 First-step pain

Ankle dorsiflexion – knee extended

−1.327

0.529

−0.353

−2.51

0.016

0.24

0.15

Week 12

 Foot pain

BMI

−1.237

0.424

−0.389

−2.92

0.006

0.39

0.33*

Duration of symptoms

−0.364

0.175

−0.251

−2.08

0.044

  

 Foot function

BMI

−0.671

0.288

−0.298

−2.33

0.025

0.42

0.37*

 First-step pain

BMI

1.220

0.430

0.406

2.83

0.007

0.25

0.19*

Age

−0.503

0.228

−0.276

−2.20

0.033

  
  1. Abbreviations: SE standard error, FACS Fear-Avoidance Components Scale, BMI body mass index
  2. aAdjusted for age, sex, BMI, and baseline scores of the dependent variable
  3. bThe p-value represents the statistical significance of individual variables
  4. * The p-value of the adjusted R2 was < 0.05