Outcome measure instruments for the assessment and treatment of androgenetic alopecia: A scoping review

This scoping review analyzed 317 studies involving 194,158 individuals to identify outcome measure instruments (OMIs) used in assessing and treating androgenetic alopecia (AGA). It found that 12 clinician-reported OMIs were used in 51.7% of studies, with the Hamilton-Norwood and Ludwig scales being the most common for male and female-pattern hair loss, respectively. The Men Hair Growth Questionnaire was the most used patient-reported severity assessment tool in clinical trials. However, patient-reported instruments are underutilized, and there is inconsistency in the application of condition-specific OMIs across AGA trials. The study highlights the need for standardized assessment and psychometric evaluation of existing instruments.