Abstract
Background
The self-administered foot evaluation questionnaire is a comprehensive measure for
assessing the perception of patients regarding their foot-related problems. However,
it is currently only available in English and Japanesse. Therefore, this study aimed
to cross-culturally adapt the questionnaire to Spanish and assess its psychometric
properties.
Methods
The methodology recommended by the International Society for Pharmaco Economics and
Outcomes Research for translating and validating patient-reported outcome measures
was followed for the Spanish translation. After a pilot study with 10 patients and
10 controls, an observational study was carried out between March and December 2021.
The Spanish version of the questionnaire was filled by 100 patients with unilateral
foot disorders, and the time spent to complete each questionnaire was recorded. Cronbach's
alpha was calculated to analyze the internal consistency of the scale and Pearson's
correlation coefficients for the degree of inter-subscale associations.
Results
The maximum correlation coefficient for the Physical Functioning, Daily Living, and
Social Functioning subscales was 0.768. The inter-subscale correlation coefficients
were significant (p < 0.001). Additionally, the value of Cronbach's alpha for the
whole scale was 0.894 (95% confidence interval, 0.858–0.924). The values of Cronbach's
alpha varied between 0.863 and 0.889 when the value of one of the five subscales was
suppressed, which can be considered a measure of good internal consistency.
Conclusion
The Spanish version of the questionnaire is valid and reliable. The method followed
for its transcultural adaptation ensured its conceptual equivalence with the original
questionnaire. Health practitioners can use the self-administered foot evaluation
questionnaire as a complementary method to assess the interventions performed for
ankle and foot disorders among native Spanish speakers; however, further research
is necessary to assess its consistency for use by populations from other Spanish-speaking
countries.
Keywords
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Article info
Publication history
Published online: March 11, 2023
Accepted:
February 14,
2023
Received in revised form:
January 11,
2023
Received:
December 16,
2022
Publication stage
In Press Corrected ProofFootnotes
☆This work was approved by the Local Human Research Ethics Committee (Ref CEIH-2018-02 and CEIm-LP-2021-418-1).
Identification
Copyright
© 2023 The Japanese Orthopaedic Association. Published by Elsevier B.V. All rights reserved.
