The validity, reliability and acceptability of the SAVASI; a new self-assessment score in XXXX .

@entity1 @entity1694 @entity272
BACKGROUND: Vitiligo is a common @entity272 that can influence a @entity1 's quality of life. Although @entity1 -orientated medicine is an emerging concept, a self-assessment tool to assess the degree of depigmentation in @entity1694 is not yet available. Therefore, we developed the SAVASI, a self-assessment tool that uses the same basic principles as the VASI. OBJECTIVE: To assess the validity, reliability and acceptability of the SAVASI. METHODS: To assess the validity of the SAVASI, we compared the scores assessed by the @entity1 with the scores of the VASI assessed by the physician. To assess the intra-rater reliability, the correlation between the baseline SAVASI and the SAVASI after 2  weeks was calculated. To assess the acceptability, @entity1 indicated the time needed to complete the SAVASI and the @entity1 assessed the difficulty of the questionnaire on a five-point scale. The Skindex-29 was used to determine the quality of life. The overestimation of the SAVASI compared to the VASI was calculated by subtracting the VASI scores off from the SAVASI scores. RESULTS: A high correlation between the VASI and the SAVASI (ICC 0.97, 95% CI: 0.95-0.98) was found in 60 @entity1 . The intra-rater reliability of the SAVASI (ICC 0.75, 95% CI 0.54-0.87) was adequate in 31 @entity1 . Fifty (83%) of the @entity1 completed the questionnaire within 10  min and only five (8%) of the @entity1 considered the SAVASI hard. We found no correlation between overestimation of the SAVASI score and the Skindex-29 score. CONCLUSION: The SAVASI is a valid, reliable and acceptable self-assessment tool to measure the degree of depigmentation in @entity1694 . With the SAVASI the degree of depigmentation can reliably be assessed by the @entity1 themselves which can be useful in large (epidemiological) studies. Furthermore, this could contribute to the @entity1 's disease insight and therapy loyalty.
