Inter-rater and Intra-rater Reliability of the Global Eyebrow Assessment Scale
Overview
- Phase
- Not Applicable
- Intervention
- No Intervention
- Conditions
- Healthy Volunteers
- Sponsor
- Allergan
- Enrollment
- 112
- Primary Endpoint
- Inter-rater Reliability of Physician Raters Using the Global Eyebrow Assessment (GEBA) Scale
- Status
- Completed
- Last Updated
- 13 years ago
Overview
Brief Summary
This study evaluated the inter- and intra-rater reliability of the GEBA Scale with photonumeric guide for the assessment of overall eyebrow fullness. There is no treatment (intervention) associated with this study.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Willing to remove makeup and jewelry at each visit
- •Willing to have photographs taken of the facial area
Exclusion Criteria
- •Permanent eyebrow makeup (i.e., tattooing) or eyebrow implants of any kind
- •Eyebrow extension application within 3 months of study entry
- •Eyebrow tint or dye application within 2 months of study entry
- •Eyebrow grooming (i.e., tweezing, waxing, or threading) between visits that is not part of the current routine
Arms & Interventions
All Participants
Healthy volunteers. No treatment (intervention) was received.
Intervention: No Intervention
Outcomes
Primary Outcomes
Inter-rater Reliability of Physician Raters Using the Global Eyebrow Assessment (GEBA) Scale
Time Frame: Day 1
Inter-rater agreement (among raters) of the GEBA scores (1=very sparse, 2=sparse, 3=full, 4=very full) to assess eyebrow fullness was evaluated using Kendall's coefficient of concordance (Kendall's W). Each of 7 raters scored 112 subjects' eyebrows using the GEBA Scale at 2 different time points at day 1. The overall inter-rater agreement for Kendall's W for all raters combined was estimated based on the average of the scores from those 2 different time points. The degree of agreement of the point estimates of Kendall's W was interpreted according to the reference range scale that was pre-defined as: ≤ 0: poor, 0.00-0.20: slightly, 0.21-0.40: fair, 0.41-0.60: moderate, 0.61-0.80: substantial and 0.81-1:00: almost perfect. The 95% confidence interval for Kendall's W was provided.
Intra-rater Reliability of Physician Raters Using the Global Eyebrow Assessment (GEBA) Scale
Time Frame: Day 1
Intra-rater (within raters) agreement of the GEBA scores (1=very sparse, 2=sparse, 3=full, 4=very full) to assess eyebrow fullness was evaluated by weighted Kappa statistics. Weighted Kappa statistics were calculated for each of 7 raters who evaluated 112 subjects using GEBA scale, assessing agreement between 2 different time points at day 1. The overall intra-rater agreement for Kappa statistics for all raters combined was estimated by pooling Kappa statistics for each rater using a chi-square statistic. The degree of agreement of the point estimates of Kappa statistics was interpreted according to the reference range scale that was predefined as: ≤ 0: poor, 0.00-0.20: slightly, 0.21-0.40: fair, 0.41-0.60: moderate, 0.61-0.80: substantial and 0.81-1:00: almost perfect. The 95% confidence interval for Kappa statistics was provided.