Here’s a cite I pulled up for an old thread about changing sexual orientation:
Since this study involved interviewing people who had undergone “ex-gay” therapy, it could not address the actual suicide rate among this population. (Not without a Ouija board, at least.) A quick search didn’t produce a good figure for the percentage of Americans who have ever attempted suicide, but this CDC datasheet (PDF) says “An estimated 1 million adults (0.5% of the U.S. adult population) reported making a suicide attempt in the past year.” More than ten times as many (5.4%) of the participants in the Shidlo and Schroeder study had attempted suicide after undergoing “ex-gay” therapy. Even if we exclude the three with a previous history of suicide attempts, that’s still 4%. I realize there are a number of problems with this comparison and wouldn’t call it solid evidence of anything, but it’s suggestive.
More importantly, participants in this study were nearly six times as likely to say that “ex-gay” therapy had caused them lasting harm than they were to say that it had helped them.