Statistical analysis
ADVERSE EVENT
The subject data consisted of three types: Safety Set (SS) analysis, Full Analysis Set (FAS) analysis, and Per Protocol Set (PPS) analysis. To evaluate the efficacy of the product, PPS analysis was used as the main analysis method, and FAS analysis was additionally performed. The adverse event ratios associated with the test product were calculated in the SS analysis. The missing data was replaced with the most recent available data according to the last observation carried forward (LOCF) principle. We analyzed the within‐group differences between the baseline characteristics and the efficacy parameters (hair density, thickness, and gloss), which were compared using a paired 