The UCLA study was done well

We wish to be clear the study honestly reported the suicide attempt rate based on their survey.  For their survey and their sample it is valid.  However, the mathematics reinforce the following limitations of the study which are stated in the paper  \cite{Haas} .
The study was conducted as a survey distributed online and on paper.  It is based on self reports.  \cite{Haas} states that while they took precautions that surveys which ask people if they've attempted suicide will often inflate the rate through people reporting other types of self harm  as an attempt.  The survey also did not explore the mental health status of the people sampled. 
Lastly and most importantly the sample used was one of convenience not a selected and randomized study with proper control groups.  Therefore the people who answer the survey are those who are most motivated to answer the survey.  
Commentator Comments are Not Facts
The pure mathematics, facts of the strongest kind, show that given the actual population data, the second strongest kind of fact,  that the statistic based on a sample is not actually a fact outside of that sample.    
The above three facts need to be mentioned when anyone such as \cite{Shapiro2016} or others who wish to make an anti transgender rights case.  This UCLA study does not support their conclusion which is based on a simple over generalization of the findings of that study by commentators who are able to give the impression of intellectual rigor to the masses.