Abstract
Background: A validated scale is needed for objective and reproducible comparisons of chin appearance before and after chin augmentation in practice and clinical studies. Objective: To describe the development and validation of the 5-point photonumeric Allergan Chin Retrusion Scale. Methods: The Allergan Chin Retrusion 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 = 298) completed during 2 sessions occurring 3 weeks apart. Results: A difference of ≥1 point on the scale was shown to reflect a clinically meaningful difference (mean [95% confidence interval] absolute score difference, 1.07 [0.94-1.20] for clinically different image pairs and 0.51 [0.39-0.63] for not clinically different pairs). Intrarater agreement between the 2 live-subject validation sessions was substantial (mean weighted kappa = 0.79). Interrater agreement was substantial during the second rating session (0.68, primary end point). Conclusion: The Allergan Chin Retrusion Scale is a validated and reliable scale for physician rating of severity of chin retrusion.
| Original language | English (US) |
|---|---|
| Pages (from-to) | S211-S218 |
| Journal | Dermatologic Surgery |
| Volume | 42 |
| DOIs | |
| State | Published - 2016 |
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ASJC Scopus subject areas
- Surgery
- Dermatology
Cite this
Development and validation of a photonumeric scale for assessment of chin retrusion. / Sykes, Jonathan M; Carruthers, Alastair; Hardas, Bhushan; Murphy, Diane K.; Jones, Derek; Carruthers, Jean; Donofrio, Lisa; Creutz, Lela; Marx, Ann; Dill, Sara.
In: Dermatologic Surgery, Vol. 42, 2016, p. S211-S218.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Development and validation of a photonumeric scale for assessment of chin retrusion
AU - Sykes, Jonathan M
AU - Carruthers, Alastair
AU - Hardas, Bhushan
AU - Murphy, Diane K.
AU - Jones, Derek
AU - Carruthers, Jean
AU - Donofrio, Lisa
AU - Creutz, Lela
AU - Marx, Ann
AU - Dill, Sara
PY - 2016
Y1 - 2016
N2 - Background: A validated scale is needed for objective and reproducible comparisons of chin appearance before and after chin augmentation in practice and clinical studies. Objective: To describe the development and validation of the 5-point photonumeric Allergan Chin Retrusion Scale. Methods: The Allergan Chin Retrusion 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 = 298) completed during 2 sessions occurring 3 weeks apart. Results: A difference of ≥1 point on the scale was shown to reflect a clinically meaningful difference (mean [95% confidence interval] absolute score difference, 1.07 [0.94-1.20] for clinically different image pairs and 0.51 [0.39-0.63] for not clinically different pairs). Intrarater agreement between the 2 live-subject validation sessions was substantial (mean weighted kappa = 0.79). Interrater agreement was substantial during the second rating session (0.68, primary end point). Conclusion: The Allergan Chin Retrusion Scale is a validated and reliable scale for physician rating of severity of chin retrusion.
AB - Background: A validated scale is needed for objective and reproducible comparisons of chin appearance before and after chin augmentation in practice and clinical studies. Objective: To describe the development and validation of the 5-point photonumeric Allergan Chin Retrusion Scale. Methods: The Allergan Chin Retrusion 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 = 298) completed during 2 sessions occurring 3 weeks apart. Results: A difference of ≥1 point on the scale was shown to reflect a clinically meaningful difference (mean [95% confidence interval] absolute score difference, 1.07 [0.94-1.20] for clinically different image pairs and 0.51 [0.39-0.63] for not clinically different pairs). Intrarater agreement between the 2 live-subject validation sessions was substantial (mean weighted kappa = 0.79). Interrater agreement was substantial during the second rating session (0.68, primary end point). Conclusion: The Allergan Chin Retrusion Scale is a validated and reliable scale for physician rating of severity of chin retrusion.
UR - http://www.scopus.com/inward/record.url?scp=85016004334&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85016004334&partnerID=8YFLogxK
U2 - 10.1097/DSS.0000000000000849
DO - 10.1097/DSS.0000000000000849
M3 - Article
C2 - 27661743
AN - SCOPUS:85016004334
VL - 42
SP - S211-S218
JO - Dermatologic Surgery
JF - Dermatologic Surgery
SN - 1076-0512
ER -