3 years PACE commissioned a similar study of the rates of attempted suicide amongst trans youth. They had the % more or less the same as Stonewall, at 48%.
The rate of suicide attempt amongst trans youth is not news, its been known for sometime. (They also looked at the % who made a second attempt).
www.theguardian.com/society/2014/nov/19/young-transgender-suicide-attempts-survey
We also know that trans/GNC/gender questioning children are 82% less likely to attempt suicide if they have family and social support. Family and social rejection - that is, when family and society deny the identity the young person is expressing - is one of the biggest contributing factors to this high attempt rate.
This link is to some Canadian research bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-015-1867-2
Nor can we ignore that many of the arguments put forward by anti-trans activists deny agency and autonomy to young people. Some of the arguments I have heard put forward which best example this:
"trans boys are really butch lesbians" (just aside from how extremely uncomfortable I am with telling our children what their sexuality 'ought' to be)
"sudden onset gender dysphoria" (which started popping up in the summer) pathologies' children, as well denying them agency with a totally made up label for which I have been unable to find any peer reviewed, academic studies on by the way. It also denies agency and autonomy to trans/GNC/gender questioning children.
"transing our children" is not a thing in the same way that the gay mafia weren't trying to turn the children gay in the 80's and 90's. And it denies them agency.
I am merely suggesting that listening to these children - on the basis of them being autonomous human beings who are not actually little extensions of us - might be a better first step than slapping narrow pre-conceptions on them.