"The surveys and studies are being done and information is being complied. I believe we will all see that the statistics for change are much higher than 30%. In the past 10 years First Stone Ministries has noted that the men and women who truly work through the program and wholeheartedly apply themselves reveal that the percentage rate of people who are able to overcome the homosexual lifestyle is much greater than 50%." 1999
That was 1999. Probably even higher today 2006 due to the knowledge "You have the choice to change IF you want to change" is no longer a secret.
I think the bottom line is that the statistics are really not in, and never will be. Yes, some people are able to do something about changing their sexual activity preference. Others are not.
I doubt very much that the percentage of those who start any of these programs and successfully change their sexual orientation is anywhere near 50%. Your First Stone information qualifies their statement very strictly, limiting their success assessments to those who are the most active in "working the program." Assessed from the numbers who "start" the program, their estimates would, no doubt, be much lower.
It's the same in every behavior modification program, I'm afraid.