I actually read an interview with the author of that Swedish study that has been linked multiple times in this thread now. You can find it here: http://www.transadvocate.com/fact-check-study-shows-transition-makes-trans-people-suicidal_n_15483.htm
Somewhere along the way someone misrepresented the findings in that study to support their own bigoted views and now it's commonly cited to support views it does not support at all. As far as how it has been misused in this thread, here is a quote from an author of that study herself in regards to her study being used to claim that sex-reassignment increases a transgender person's likelihood to commit suicide:
"Dhejne: The aim of trans medical interventions is to bring a trans person’s body more inline with their gender identity, resulting in the measurable diminishment of their gender dysphoria. However trans people as a group also experience significant social oppression in the form of bullying, abuse, rape and hate crimes. Medical transition alone won’t resolve the effects of crushing social oppression: social anxiety, depression and posttraumatic stress.
What we’ve found is that treatment models which ignore the effect of cultural oppression and outright hate aren’t enough. We need to understand that our treatment models must be responsive to not only gender dysphoria, but the effects of anti-trans hate as well. That’s what improved care means."