Development and validation of ibsa photographic scale for the assessment of inner upper arm laxity

Daniel Cassuto, Giovanni Pellacani, Antonello Tateo, Ofir Artzi, Fabio Massimo Ingallina, Giovanni Salti, Elena Rossi, Arturo Lanzarotti, Malika Laouedj, Nicolas Dapis, Gilberto Bellia*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Objective: To describe the development and validation of the 5-grade photographic IBSA inner upper arm scale. Methods: From 2 real-life pictures, a scale made up of 5 morphed images showing increasing severity of inner upper arm laxity was created. For validation, a set of 50 images (half of which real and the other morphed) was developed and sent to 5 trained physicians in two rounds 30 days apart. Raters’ task was to make a selection of each image according to the given scale. Inter-rater and intra-rater reliability were evaluated in both rounds. Results: As to intra-rater reliability, single-rater kappa scores between 0.74 and 1.00 and a global kappa score of 0.846 were observed, while inter-rater agreement was calculated with intra-class correlation coefficient reporting scores higher than 0.91, which indicate excellent reliability. Conclusion: IBSA inner upper arm laxity scale proved to be a validated and reliable tool.

Original languageEnglish
Pages (from-to)1465-1471
Number of pages7
JournalClinical, Cosmetic and Investigational Dermatology
Volume14
DOIs
StatePublished - 2021
Externally publishedYes

Funding

FundersFunder number
IBSA Farmaceutici Italia

    Keywords

    • Aesthetic medicine
    • Laxity
    • Photographic scale
    • Scale development
    • Scale validation
    • Upper inner arm

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