Have to correct myself. Narconon claims an 86% success rate, not 90%
Narconon's success rates
Still high enough for those concerned with high positive stats. The Scientologists say they conducted 3 studies showing incredibly positive results.
Sure, there was some trouble producing anything at all that backed up their claims when required to do so by a German court but hey, they wouldn't lie would they?
'Given the claims of studies showing high success rates, it is strange that when Narconon sought tax rebates in Stuttgart, Germany, they were unable to provide any evidence to support their claims of efficacy. The Stuttgart Verwaltungsgerichtshof (administrative appeals court) found that
"The papers filed by the petitioner offer no evidence of a successful drug withdrawal at the petitioner."
[Decision of the VGH Stuttgart, 10 May 1993, Az: 1 S 3021/92]'
I don't mean to discount in any way the study that the OP hinted was so alarming in this short examination of the lack of general wonderfulness of recovery studies. I do hope he/she is not sensitive to the truth.