Table 3 Item convergent and discriminant validity of the Polish Diabetic Foot Ulcer Scale - Short Form
Subscale of DFS-SF | Items (n) | Item convergent validitya (%) | Item discriminant validityb (%) | Median corrected item-scale correlation (range) |
|---|---|---|---|---|
Leisure | 5 | 100% | 100% | 0.81 (0.80 – 0.84) |
Physical health | 5 | 100% | 100% | 0.70 (0.64 – 0.74) |
Worried about ulcers/feet | 6 | 100% | 83% | 0.77 (0.63 – 0.81) |
Dependence/daily life | 5 | 100% | 100% | 0.81 (0.66 – 0.83) |
Negative emotions | 5 | 80% | 80% | 0.77 (0.54 – 0.79) |
Bothered by ulcer care | 4 | 100% | 75% | 0.61 (0.61 – 0.68) |