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Table 1 The number and frequency of ICF categories for each component of the ICF classification that were linked to the LFIS-RA and to concepts derived from PsA-related foot involvement

From: Linking the effect of psoriatic arthritis-related foot involvement to the Leeds Foot Impact Scale using the International Classification for Functioning, Disability and Health: a study to assess content validity

ICF components

ICF categories linked to the LFIS-RA

ICF categories linked to concepts derived from PsA-related foot involvement

n (%)

Frequency (%)

n (%)

Frequency (%)

Body Structures

1 (3%)

5 (5%)

17 (12%)

1127 (15%)

Body Functions

13 (37%)

41 (44%)

48 (32%)

2656 (35%)

Activities and Participation

17 (49%)

33 (35%)

55 (37%)

1420 (19%)

Environmental Factors

4 (11%)

15 (16%)

28 (19%)

2327 (31%)

Total

35

94

148

7530

  1. ICF international Classification of Functioning, Disability and Health, LFIS-RA Leeds Foot Impact Scale in rheumatoid arthritis, PsA Psoriatic arthritis