Fig. 4.

i Receiver operator characteristic (ROC) curves treat the evaluation by our three trained assessors as the gold standard and compare it with the self-reported evaluation by the participant. AUC refers to the area under curve values of the corresponding ROC curves. ROC curves describe grading data for glabellar frowns. ii Receiver operator characteristic (ROC) curves treat the evaluation by our three trained assessors as the gold standard and compare it with the self-reported evaluation by the participant. AUC refers to the area under curve values of the corresponding ROC curves. ROC curves describe grading data for nasolabial folds. iii Receiver operator characteristic (ROC) curves treat the self-reported evaluation by the participant as the gold standard and compare it with the evaluation by our three trained assessors. AUC refers to the area under curve values of the corresponding ROC curves. ROC curves describe grading data for glabellar frowns. iv Receiver operator characteristic (ROC) curves treat the self-reported evaluation by the participant as the gold standard and compare it with the evaluation by our three trained assessors. AUC refers to the area under curve values of the corresponding ROC curves. ROC curves describe grading data for nasolabial folds