Translation and Validation of the Chinese Diabetic Foot Ulcer Scale – Short Form

Abstract

The newly translated Chinese DFS-SF may be used to assess the impact of DFU in Chinese patients.

Validity and reliability of the Greek version of the Diabetic Foot Ulcer Scale - Short Form (DFS-SF)

“…25 Scale internal consistency reliability was high (Cronbach's alpha range: 0.79-0.94) and comparable to (or even exceeding) the corresponding coefficients reported in the developmental study of the instrument 20 and other DFS-SF validations. 36 Item internal consistency and discriminant validity were also high, providing evidence to confirm the hypothesized scale structure of the DFS-SF and to suggest that the translation of the items and the response choices are appropriate. This is evidence that scale scores derived from the Greek version could contribute to cross-cultural comparisons.…”

“…This could have been expected because DFUs can deteriorate quickly and limited treatment options can cause patients to worry about further deterioration. 11,36 Other observed strong interscale correlations might be explained similarly.…”

“…Similar findings have been reported in the validation study of the Chinese DFS-SF. 36 On the other hand, there is significant evidence of convergent validity from the strong correlations between DFS-SF and SF-36 scales which are intended to measure similar constructs, e.g. physical health and physical functioning (p=0.71), physical health and vitality (p=0.79), dependence/daily life and physical functioning (p=0.71), dependence/daily life and vitality (p=0.71).…”

“…35 Based on the literature, such strong correlations might be expected between the DFS-SF's leisure, physical health, dependence/ daily scales and the SF-36's physical functioning, role physical, and bodily pain scales. 36 Item internal consistency, which is substantial when correlation between an item and its hypothesized scale (corrected for overlap) is >0.40, and item discriminant validity, which is successful when correlation between an item and its own scale is significantly higher (>2 standard errors) than with other scales, 37 were used to examine the hypothesized scale structure. Each SF-36 scale was regressed against the DFS-SF scales to identify aspects of the ulceration-specific instrument more closely linked to general HRQoL.…”

“…The results were observed in the Chinese DFS-SF validation study as well. 36 The ability of the DFS-SF to capture specific aspects of overall HRQoL is demonstrated by its close relationship with the "gold standard" SF-36. Multiple stepwise linear regression analyses identified the foot ucleration-specific scales that were significant, at the P <0.05 level, in explaining each of the SF-36 scales (Table 5).…”