research Use of an alternative method to evaluate erythema severity in a clinical trial: difference in vehicle response with evaluation of baseline and postdose photographs for effect of oxymetazoline cream 1·0% for persistent erythema of rosacea in a phase IV study
In this study, adults with persistent facial erythema of rosacea showed significantly greater improvement when treated with once-daily oxymetazoline cream compared to a vehicle, and using baseline photographs in assessments enhanced the accuracy by reducing perceived vehicle effects.