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  • How much manipulation can be done on AVAL for records coming from SDTM before a new parameter should be used instead of copying QSTEST/QSTESTCD into PARAM/PARAMCD?  For example, what if SDTM only collects character values (<=15 minutes, 15-30 minutes, etc.), but numeric codes are required for analysis- can those go into AVAL?  What would be imputed- the character or the numeric value?  Does this change if we are transforming or reversing collected scores for analysis?
  • PARCAT1 holds the instrument name, and PARCATy holds the subscale name(s) associated with the item.  How should items contributing to multiple subscale calculations be modeled?
  • Recommendation has been made to publish these best practices in a more formal format than this Wiki page.  Will revisit in 2023, once more supplements have been published and this is felt to be more stable.