This step we create data multi-dimensional based on the relationship of the following 4 categories:
Psychoactive substance use, duration of the substance use, patient demographic data, and schizophrenia status.
We were selected 24 datasets combinations type which related to the demonstration of the factors associated with Schizophrenia. Our 12 datasets were composed of the data from 2 categories and another 12 datasets were composed of data from 3 categories, this study designed to perform the association rule discovery.