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Table 6 Pearson’s correlation coefficient of the FFI subscales with the SF-36 domains

From: Foot Function Index for Arabic-speaking patients (FFI-Ar): translation, cross-cultural adaptation and validation study

SF-36 domains Pain Disability Activity limitation FFI total
Physical functioning − 0.29* − 0.66** − 0.61** − 0.65**
Role physical − 0.34* − 0.49** − 0.43** − 0.52**
Bodily pain − 0.58** − 0.51** − 0.44** − 0.61**
General health − 0.23 − 0.27 − 0.14 − 0.26
Vitality − 0.30* − 0.42** − 0.28 − 0.40**
Social functioning − 0.35* − 0.34* − 0.36** − 0.43**
Role emotional − 0.22 − 0.27 − 0.32* − 0.33*
Mental health − 0.29 − 0.16 − 0.25 − 0.28*
PCS − 0.34* − 0.60** − 0.47** − 0.58**
MCS − 0.26 − 0.19 − 0.25 − 0.28
NRS 0.72** 0.48** 0.24 0.57**
  1. PCS physical component summary, MCS mental component summary, NRS numeric rating scale
  2. **Correlation is significant at the 0.01 level (2-tailed)
  3. *Correlation is significant at the 0.05 level (2-tailed)