Concomitant Medication Start Relative to Reference Timepoint

An indication or description of the start of concomitant medication usage in relation to a specific point in time. (NCI Thesaurus)

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Concomitant Medication Start Day

The day of the week that concomitant medication usage began.

Concomitant Medication Start Date

The date on which the concomitant medication usage begins.

Concomitant Medication Sequence

An identifier that describes the relative position of concomitant medication data within a series.

Concomitant Medication Route of Administration

The means of entry through which the concomitant medication is taken into the body.

Concomitant Medication Reason Not Collected

The rationale why concomitant medication data was not obtained.

Concomitant Medication Previous Occurrence

An indication or description that a particular concomitant medication was taken in the past.