Development and validation of a photonumeric scale for evaluation of transverse neck lines

Derek Jones, Alastair Carruthers, Bhushan Hardas, Diane K. Murphy, Jonathan M Sykes, Lisa Donofrio, Jean Carruthers, Lela Creutz, Ann Marx, Sara Dill

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Background: A validated scale is needed for objective and reproducible comparisons of horizontal neck lines before and after treatment in practice and clinical studies. Objective: To describe the development and validation of the 5-point photonumeric Allergan Transverse Neck Lines Scale. Methods: The Allergan Transverse Neck 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 rating validation study (N = 297) completed during 2 sessions occurring 3 weeks apart. Results: A difference of ≥1 point on the scale was shown to reflect a clinically significant difference (mean [95% confidence interval] absolute score difference, 1.22 [1.09-1.35] for clinically different image pairs and 0.57 [0.42-0.72] for not clinically different pairs). Intrarater agreement between the 2 live-subject rating validation sessions was substantial (mean weighted kappa = 0.78). Interrater agreement was substantial during the second rating session (0.73, primary end point). Conclusion: The Allergan Transverse Neck Lines Scale is a validated and reliable scale for rating of severity of neck lines.

Original languageEnglish (US)
Pages (from-to)S235-S242
JournalDermatologic Surgery
Volume42
DOIs
StatePublished - 2016

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Neck
Validation Studies
Confidence Intervals

ASJC Scopus subject areas

  • Surgery
  • Dermatology

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Development and validation of a photonumeric scale for evaluation of transverse neck lines. / Jones, Derek; Carruthers, Alastair; Hardas, Bhushan; Murphy, Diane K.; Sykes, Jonathan M; Donofrio, Lisa; Carruthers, Jean; Creutz, Lela; Marx, Ann; Dill, Sara.

In: Dermatologic Surgery, Vol. 42, 2016, p. S235-S242.

Research output: Contribution to journalArticle

Jones, D, Carruthers, A, Hardas, B, Murphy, DK, Sykes, JM, Donofrio, L, Carruthers, J, Creutz, L, Marx, A & Dill, S 2016, 'Development and validation of a photonumeric scale for evaluation of transverse neck lines', Dermatologic Surgery, vol. 42, pp. S235-S242. https://doi.org/10.1097/DSS.0000000000000851
Jones, Derek ; Carruthers, Alastair ; Hardas, Bhushan ; Murphy, Diane K. ; Sykes, Jonathan M ; Donofrio, Lisa ; Carruthers, Jean ; Creutz, Lela ; Marx, Ann ; Dill, Sara. / Development and validation of a photonumeric scale for evaluation of transverse neck lines. In: Dermatologic Surgery. 2016 ; Vol. 42. pp. S235-S242.
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abstract = "Background: A validated scale is needed for objective and reproducible comparisons of horizontal neck lines before and after treatment in practice and clinical studies. Objective: To describe the development and validation of the 5-point photonumeric Allergan Transverse Neck Lines Scale. Methods: The Allergan Transverse Neck 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 rating validation study (N = 297) completed during 2 sessions occurring 3 weeks apart. Results: A difference of ≥1 point on the scale was shown to reflect a clinically significant difference (mean [95{\%} confidence interval] absolute score difference, 1.22 [1.09-1.35] for clinically different image pairs and 0.57 [0.42-0.72] for not clinically different pairs). Intrarater agreement between the 2 live-subject rating validation sessions was substantial (mean weighted kappa = 0.78). Interrater agreement was substantial during the second rating session (0.73, primary end point). Conclusion: The Allergan Transverse Neck Lines Scale is a validated and reliable scale for rating of severity of neck lines.",
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