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Evaluation of essential clinical components and features of current acne global grading scales
Jerry K L Tan1, Emily Jones2, Elizabeth Allen2
1Western University, London, Ontario, Canada; Windsor Clinical Research Inc, Windsor, Ontario, Canada.
Background:
Acne research is hindered by the absence of a universal, consistently applied standard for severity grading. Acne experts recently identified 4 essential clinical components and 2 features for an ideal acne global grading scale (AGGS).
Objective:
This study evaluated current AGGSs against consensus criteria previously identified as necessary.
Methods:
AGGSs were identified by systematic literature search and then evaluated independently by 4 raters against criteria (components and subcomponents; features and subfeatures) identified as essential.
Results:
Eighteen AGGSs fulfilled selection criteria. Three scored 1 full SD above the mean for categorical scores. We also identified highest-ranked AGGSs for subcategory scores.
Limitations:
Only English-language scales were selected. Efficiency and acceptance were not evaluable.
Conclusion:
Although no singular scale fulfilled all essential criteria, this study did identify highly ranked AGGSs. Incorporation and rationalization of their components and features should facilitate development of an ideal standard.
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