Objectives: To establish
a valid and reliable translated version of Derriford Appearance Scale (DAS59) for
Nepali population. Methods: A standard
translation-back-translation procedure was used followed by evaluation of semantic,
conceptual and society equivalence by the committee and changes were made according
to recommendations. This corrected version was pretested and a final version was
developed. A validation study was performed using the final version on 424 patients
including 212 patients with clinical appearance problems and similar number of young
adults who had no concern for facial appearance. Reliability was assessed by Cronbach’s
alpha value and test-retest correlation coefficient. Discriminate and convergent
validity were assessed by comparison between clinical and normal population and
correlation with Beck’s Anxiety Inventory(BAI), Beck’s Depression Inventory(BDI)and General Health questionnaire (GHQ).Results: The results indicated excellent internal consistency (Cronbach’s alpha = 0.98) and
good test-retest reliability
(0.91 for clinical population, 0.86 for normal population). The Discriminate validity
was good with statistically significant differences between clinical and normal
population. The convergent validity
was confirmed by good correlation with other related psychometric
tools. Conclusion: A valid and reliable
Nepali DAS59 version was developed which can be used for research
and clinical assessment of patients with appearance problems and concerns.
Cite this paper
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