Hi,
We have developed a digitally delivered behavioral change intervention with personalized feedback for college students making use of illicit drugs (see our protocol published here:
(JMIR Res Protoc 2020;9(8):e17829) doi: 10.2196/17829)
We are now in the process of examining the different components of the intervention in an RCT study, using a fractional factorial design.
Does anyone have access to SAS Factex (full version) to run the syntax for us and help us to estimate the number of experimental arms? I do not have access/knowledge on SAS.
The syntax has been defined using the tutorial paper of Collin's et al (Psychol Methods. 2009 September ; 14(3): 202–224. doi:10.1037/a0015826.) and we only want the template SAS generates to define the experimental arms.
All the details can be provided, please email me [email protected]
*Further collaboration will be discussed and of course acknowledgment on the paper will be secured.
Dear Vsilis: you need to ask any one familiar with computer software in your institution, or nearby, you will get the answer.
Hi Medhat, this is what I finally did. I asked some colleagues from the Mathematics department who helped me with this. Thank you
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