TRTP is a record-level identifier that represents the planned treatment product attributed to a record for analysis purposes. TRTP indicates how treatment product varies by record within a subject and enables analysis of crossover and other designs. Though there is no requirement that TRTP will correspond to the TRTxxP as defined by the record's value of APERIOD, if populated, TRTP must match at least one value of the character planned treatment product variables in ADSL (e.g., TRTxxP, TRTSEQP, TRxxPGy).
As noted previously, at least one treatment product variable is required even in non-randomized trials. This requirement is satisfied by any subject-level or record-level treatment product variables (e.g., TRTxxP, TRTP, TRTA). Even if not used for analysis, any ADSL treatment product variable may be included in the BDS dataset.