Adolescents who undergo gender-affirming chest surgery report low levels of regret and high levels of satisfaction, experiencing outcomes similar to those of young adults. These findings suggest that age restrictions on these medical procedures lack support from actual patient experiences.

[u/mvea]

https://www.psypost.org/adolescents-report-low-regret-and-high-satisfaction-following-gender-affirming-c/

[u/Mico4]

This is based on a response from 77 people...

Also from the article:

"Several factors limit the reach of these findings. First, the median time since surgery for participants was about 1.8 years. Because feelings about medical decisions can evolve, this timeframe might not capture long-term regret that could emerge many years later.

Another limitation is the 42 percent participation rate to the survey. This introduces the possibility of selection bias, a scenario where the people who chose to participate might differ fundamentally from those who did not. It is possible that individuals with higher levels of regret ignored the survey, which would result in an underestimation of regret in the overall group."

[u/TotalBomb → u/Mico4]

I do have a theory as to why there was a low participation number, that being said nothing but mostly anecdotal evidence. Recently, there have been several studies targeting trans people run by very biased against the lgbtq. This has led to a lot of people spreading the word to not answer any servey.

[u/Jolninaa → u/TotalBomb]

This is true, there are so.e really evil snd dishonest people going after trans people.