Atchima Suwanchinda1, Kyle Seo2, Thorin L Geister3, Yates Yen Yu Chao4, Chiranjiv Chhabra5, Sabrina G Fabi6, Carl S Hornfeldt7, Martina Kerscher8, Stephanie Lam9, Tatjana Pavicic10, Peter H L Peng11, Berthold Rzany12, Fang-Wen Tseng13, Rainer Pooth3, Niamh Corduff14. 1. International Training Center in Laser Surgery, Ramathibodi University Hospital, Bankok, Thailand. 2. Modelo Clinic, Department of Dermatology, Seoul National University College of Medicine, Seoul, Korea. 3. Merz Pharmaceuticals GmbH, Frankfurt, Germany. 4. Cosmetic Surgery and Laser Center, Taipei, Taiwan. 5. Skin Alive, Delhi, India. 6. Goldman Butterwick Fitzpatrick Groff & Fabi, Cosmetic Laser Dermatology San Diego, San Diego, California. 7. Apothekon, Inc., Woodbury, Woodbury, Minnesota. 8. University of Hamburg, Hamburg, Germany. 9. Central Health Medical Practice, Hong Kong, China. 10. Private Practice for Dermatology and Aesthetics, Munich, Germany. 11. P-Skin Professional Clinic, Taipei, Taiwan. 12. RZANY & HUND, Privatpraxis, Berlin, Germany. 13. Taoyuan Milano Aesthetic Clinic, Taipei, Taiwan. 14. Aesthetic Breast Surgery Centre, Corduff, Australia.
Abstract
BACKGROUND: As the number of different aesthetic treatments increase, numerous photonumeric assessment scales have been developed and validated to measure the effectiveness of these new treatments and techniques. Photonumeric rating scales have been developed to objectively assess improvements in anatomical areas; however, these have been based on the features of Caucasian patients. OBJECTIVE: To develop and validate a Chin Projection Scale for use in the female Asian patient population. METHODS AND MATERIALS: During 2 validation sessions, 13 raters assessed full frontal and lateral facial views of 50 Asian subjects and also estimated their age and the aesthetic treatment effort required for each subject. Chin projection was rated on a scale from 0 (optimal) to 4 (very severely receding). RESULTS: Inter-rater reliability was 0.80 (substantial) for Validation Session 1 and 0.83 (almost perfect) for Validation Session 2. The results for Estimated Age and Estimated Treatment Effort were essentially the same. CONCLUSION: This study demonstrated the validity of the first photonumeric assessment scale for assessing the appearance of the female Asian chin. This new scale will provide a standardized measure of chin projection for Asian patients in clinical practice and clinical research settings.
BACKGROUND: As the number of different aesthetic treatments increase, numerous photonumeric assessment scales have been developed and validated to measure the effectiveness of these new treatments and techniques. Photonumeric rating scales have been developed to objectively assess improvements in anatomical areas; however, these have been based on the features of Caucasian patients. OBJECTIVE: To develop and validate a Chin Projection Scale for use in the female Asian patient population. METHODS AND MATERIALS: During 2 validation sessions, 13 raters assessed full frontal and lateral facial views of 50 Asian subjects and also estimated their age and the aesthetic treatment effort required for each subject. Chin projection was rated on a scale from 0 (optimal) to 4 (very severely receding). RESULTS: Inter-rater reliability was 0.80 (substantial) for Validation Session 1 and 0.83 (almost perfect) for Validation Session 2. The results for Estimated Age and Estimated Treatment Effort were essentially the same. CONCLUSION: This study demonstrated the validity of the first photonumeric assessment scale for assessing the appearance of the female Asian chin. This new scale will provide a standardized measure of chin projection for Asian patients in clinical practice and clinical research settings.