METHODS: Two different novel five-point photonumeric scales for the assessment of static and dynamic forehead lines were developed. Moreover, a photoguide was created, including subjects from both sexes, all age groups, and different Fitzpatrick skin types. A total of 11 raters from all over the world were involved in the digital validation, whereas four raters performed a live validation.
RESULTS: The Croma Static Forehead Lines-Assessment Scale showed almost perfect inter and intra-rater agreement in both the digital and the live setting with inter-rater intraclass correlation coefficients of 0.86 [95% confidence interval (CI): 0.82-0.89] in the first digital rating and 0.82 [95% CI: 0.78-0.86] in the second digital rating. The Croma Dynamic Forehead Lines-Assessment Scale showed almost perfect inter and intra-rater agreement in the digital setting with inter-rater intraclass correlation coefficients of 0.83 [95% CI: 0.79-0.86] in the first digital rating and 0.80 [95% CI: 0.75-0.84] in the second rating and almost substantial agreement in the live setting.
CONCLUSIONS: The Croma Static Forehead Lines-Assessment Scale and the Croma Dynamic Forehead Lines-Assessment Scale have excellent inter and intra-rater agreements to be justifiably used in the clinical and study setting, both digitally and live across ethnic groups.
OBJECTIVES: The objective of this investigation was to create and validate 5-point photo numeric scales which assess horizontal necklines, platysmal bands and wrinkles in the décolleté.
METHODS: A medical team created 3 different novel 5-point photonumeric scale for the assessment of horizontal necklines, platysmal bands and décolleté wrinkling. Eleven international raters were involved in the digital validation, while 4 raters performed a live validation.
RESULTS: The Croma Horizontal Neck Line - Assessment Scale showed substantial inter-rater agreement and almost perfect intra-rater agreement in the digital and live validations. The Croma Platysmal Bands-Assessment Scale showed substantial intra-rater agreement in both, digital and live validations. For the décolleté, a static and a dynamic scale was created and validated. The Croma Static Décolleté Wrinkling-Assessment Scale showed substantial and almost perfect inter-rater agreement in the digital validation and live-validation, respectively, while the intra-rater agreement was in both almost perfect. The Croma Dynamic Décolleté Wrinkling-Assessment Scale showed almost perfect agreement in both validation settings for both, inter-and intra-rater agreement.
CONCLUSIONS: The Croma Horizontal Neck Line - Assessment Scale, the Croma Static and Dynamic Décolleté Wrinkling-Assessment Scales have sufficient inter and intrarater agreements to be justifiably used in the clinical and study setting.
OBJECTIVES: The objective of this investigation was to create and validate 5-point photo numeric scales which assess perioral lines and marionette lines.
METHODS: A medical team created two different novel 5-point photonumeric scale for the assessment of perioral lines and marionette lines. Eleven international raters were involved in the digital validation, while 4 raters performed a live validation.
RESULTS: For the Croma Static Perioral Lines-Assessment Scale digital inter-rater ICCs were 0.88 [95% CI: 0.85-0.91] in the first rating and 0.87 [0.83-0.90] in the second rating. The digital intra-rater ICCs were 0.90 [95% CI: 0.87-0.92]. In the live rating, the inter-rater ICCs were 0.89 [95% CI: 0.85-0.93] in the first rating and 0.91 [95% CI: 0.87-0.93] in the second rating with an intra-rater ICC of 0.91 [95% CI: 0.88-0.95]. For the Croma Marionette Lines-Assessment scale the digital rating inter-rater ICCs were 0.85 [95% CI: 0.81-0.89] in the first rating and 0.87 [95% CI: 0.84-0.90] in the second rating with an intra-rater ICC of 0.89 [95% CI: 0.88-0.91]. In the live rating, the inter-rater ICCs were 0.73 [95% CI: 0.54-0.83] in the first rating and 0.79 [95% CI: 0.65-0.87] in the second rating with an intra-rater ICC of 0.88 [95% CI: 0.83-0.94].
CONCLUSIONS: It is to be concluded that the Croma Static Perioral Lines-Assessment Scale and the Croma Marionette Lines-Assessment Scale have exceptional inter- and intra-rater agreements to be justifiably used in the clinical and study setting for all ethnic groups.