Table 4 Inter and intra-observer reliability analysis of FFI questionnaire
From: Validity and reliability of the Foot Function Index (FFI) questionnaire Brazilian-Portuguese version
Scores (n = 50) | Alpha de Cronbach (IC) | Inter-observer ICC | Intra-observer ICC |
|---|---|---|---|
FFI total | 0.78 (0.68–0.86) | 0.99 | 0.99 |
Disability | 0.80 (0.71–0.87) | 0.98 | 0.97 |
Activity limitation | 0.61 (0.42–0.74) | 0.97 | 0.98 |
Pain | 0.66 (0.50–0.78) | 0.99 | 0.99 |