Development and Validation of a Photonumeric Scale for Evaluation of Facial Fine Lines
| Autor: | Derek Jones, Lisa Donofrio, Alastair Carruthers, Ann Marx, Lela Creutz, Jonathan M. Sykes, Diane K. Murphy, Bhushan Hardas, Jean Carruthers, Sara Dill |
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| Rok vydání: | 2016 |
| Předmět: |
Male
Validation study Scale (ratio) Esthetics Computer science Dermatology Cosmetic Techniques Machine learning computer.software_genre 030207 dermatology & venereal diseases 03 medical and health sciences 0302 clinical medicine Photography Humans business.industry General Medicine Skin Aging 030220 oncology & carcinogenesis Face Surgery Female Original Article Artificial intelligence business computer After treatment |
| Zdroj: | Dermatologic Surgery |
| ISSN: | 1524-4725 |
| Popis: | BACKGROUND A validated scale is needed for objective and reproducible comparisons of facial fine lines before and after treatment in practice and clinical studies. OBJECTIVE To describe the development and validation of the 5-point photonumeric Allergan Fine Lines Scale. METHODS The Allergan Fine Lines Scale was developed to include an assessment guide, verbal descriptors, morphed images, and real subject images for each scale grade. The clinical significance of a 1-point score difference was evaluated in a review of multiple image pairs representing varying differences in severity. Interrater and intrarater reliability was evaluated in a live subject validation study (N = 289) completed during 2 sessions occurring 3 weeks apart. RESULTS A score difference of ≥1 point was shown to reflect a clinically significant difference (mean [95% CI] absolute score difference, 1.06 [0.92–1.21] for clinically different image pairs and 0.50 [0.38–0.61] for not clinically different pairs). Intrarater agreement between the 2 live subject validation sessions was almost perfect (weighted kappa = 0.85). Interrater agreement was substantial during the second rating session (0.76, primary end point). CONCLUSION The Allergan Fine Lines Scale is a validated and reliable scale for physician rating of severity of superficial fine lines. |
| Databáze: | OpenAIRE |
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