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Table 3 Item convergent and discriminant validity of the Polish Diabetic Foot Ulcer Scale - Short Form

From: Health related quality of life in patients with diabetic foot ulceration — translation and Polish adaptation of 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)
  1. a Percentage of items in a scale whose corrected correlation with the scale was >0.6
  2. b Percentage of items in a scale whose corrected correlation with the scale was greater than the correlation with other scales