PMC

https://pmc.ncbi.nlm.nih.gov/articles/PMC12527403/

Highlights

• This study is the first to evaluate the reproducibility of age at menarche between self-respondents and proxy respondents using appropriate measurements.
• Age at menarche obtained from questionnaires with a 9-year interval showed moderate reproducibility among self-respondents, which was maintained even at older ages.
• While proxy respondents tended to show lower reproducibility compared to self-respondents, spouse proxy respondents showed the highest reproducibility, and parent proxy respondents showed the lowest reproducibility among proxy respondents.
• Additional data are required to establish appropriate methods for handling specific proxy responses.

Selected Result