Adaptation and Validation of the Foot Function Index-Revised Short Form into Polish

Table 5

Divergent validity.

FFI-RS	Number of swollen joints	Number of tender joints	DAS 28
FFI-RS total	0.08	0.26	0.26
FFI-RS pain	0.08	0.19	0.23
FFI-RS stiffness	0.11	0.24	0.26
FFI-RS difficulty	0.08	0.25	0.26
FFI-RS activity limitation	0.01	0.19	0.10
FFI-RS social issues	−0.01	0.17	0.16

Significant correlation ( < 0.01; 2-tailed). Significant correlation ( < 0.05; 2-tailed).