318900a3_keters_of_Autism_Interventions__Notes
[0] 4 [Question] “Do you have (de-identified) data sets from your practice that suggests that this treatment works?” [Notes] 
If the practitioner cannot point to scientific studies supporting their proposed intervention, ask to see treatment data for other individuals with whom they have worked in the past. The practitioner should not provide you with the name or other identifiers of the individual they treated- just a good description of what they did and data that demonstrate functional improvement for the individual.
Association for Science in Autism Treatment | Questions to Ask Marketers of Autism Interventions
Notes