Thank you for your efforts to understand the issue. Like I mentioned earlier, the only information provided in the article is 'The statistical procedures from SAS(R) were used in all data analysis.' I would like to analyze the combination-item frequencies. In the example stated above, three-item combinations would be ABC, ABD, ABE, ACE, BCD, BCE, etc., I plan to retain the combinations with relatively high frequencies as the 'three most important' influences. Would it be the right approach? What statistical method(s) can I use. Is there a procedure in SAS for it (multiple response)? Also, I have other categorical variables (age, gender, personas, etc.) and I would like to see if there is difference in their influence (the general top 3-important influences and then Age & their 3-Important influences, Gender & their 3-Important influences etc.). Regards MS
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