Spanish translation, cross-cultural adaptation, and validation of the Questionnaire for Diabetes-Related Foot Disease (Q-DFD).

Abstract

PURPOSE:

To translate, cross-culturally adapt, and validate the Questionnaire for Diabetes-Related Foot Disease (Q-DFD), originally created and validated in Australia, for its use in Spanish-speaking patients with diabetes mellitus.

PATIENTS AND METHODS:

The translation and cross-cultural adaptation were based on international guidelines. The Spanish version of the survey was applied to a community-based (sample A) and a hospital clinic-based sample (samples B and C). Samples A and B were used to determine criterion and construct validity comparing the survey findings with clinical evaluation and medical records, respectively; while sample C was used to determine intra- and inter-rater reliability.

RESULTS:

After completing the rigorous translation process, only four items were considered problematic and required a new translation. In total, 127 patients were included in the validation study: 76 to determine criterion and construct validity and 41 to establish intra- and inter-rater reliability. For an overall diagnosis of diabetes-related foot disease, a substantial level of agreement was obtained when we compared the Q-DFD with the clinical assessment (kappa 0.77, sensitivity 80.4%, specificity 91.5%, positive likelihood ratio [LR+] 9.46, negative likelihood ratio [LR-] 0.21); while an almost perfect level of agreement was obtained when it was compared with medical records (kappa 0.88, sensitivity 87%, specificity 97%, LR+ 29.0, LR- 0.13). Survey reliability showed substantial levels of agreement, with kappa scores of 0.63 and 0.73 for intra- and inter-rater reliability, respectively.

CONCLUSION:

The translated and cross-culturally adapted Q-DFD showed good psychometric properties (validity, reproducibility, and reliability) that allow its use in Spanish-speaking diabetic populations.

• Authors: Wilson Castillo-Tandazo, Adolfo Flores-Fortty, Lourdes Feraud, Daniel Tettamanti
• Journal: Vascular health and risk management (Vasc Health Risk Manag) Vol. 9 Pg. 501-8 ( 2013) ISSN: 1178-2048 [Electronic] New Zealand
• PMID: 24039434 (Publication Type: Journal Article, Validation Study)

Topics

• Aged
• Comprehension
• Cross-Sectional Studies
• Cultural Characteristics
• Diabetic Foot (diagnosis)
• Ecuador
• Female
• Health Surveys
• Humans
• Likelihood Functions
• Male
• Middle Aged
• Observer Variation
• Predictive Value of Tests
• Reproducibility of Results
• Surveys and Questionnaires
• Translating