Background: Biobehavioural distress is comorbid in most chronic health conditions. Currently, there is a void of a standardised tool which measures distress faced by chronic diabetic foot ulcer patients.
Aims: To develop a new scale for measuring composite distress and to examine its psychometric properties.
Methods: Composite Distress Profile (CDP), a questionnaire to assess composite distress in patients with diabetic foot ulcer, was developed using inputs from 11 patients with the condition. Content validity was ensured by incorporating suggestions from 30 experts. CDP was then applied to 60 patients with diabetic foot ulcer twice at an interval of two weeks. Construct validity of CDP was examined by doing contrasted groups approach using WHO BREF-QOL. Criterion validity was examined by doing correlation with scores in SUBI (Subjective wellbeing inventory). Reliability was computed by test-retest reliability.
Results: The final CDP scale has 50-items in a five-domain structure. CDP scores negatively correlated with SUBI. Overall and domain wise testâ€“retest reliability computed using Pearsonâ€™s product moment correlation ranged from 0.976 to 0.989. When CDP was applied to three groups of patients grouped on the basis of scores obtained in WHO BREF-QOL, statistically significant difference was obtained between the groups in ANOVA F test [F (df2, 57) =30.98; p=<0.01], proving that CDP has construct validity.
Conclusion: CDP will help healthcare workers to quantify in depth data about different attributes of distress faced by diabetic foot ulcer patients, and might help in early psychological interventions for vulnerable patients.
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