FHIR Chat · Visit Timing and Windows · Vulcan/SoA

Stream: Vulcan/SoA

Topic: Visit Timing and Windows


view this post on Zulip Javier Ezcurra (Apr 01 2022 at 20:13):

Hello!
In just about clinical trial SoA, visits exist that have what I'll call "relative timing" as well as visit windows. Typically, the timing of a visit is relative to "Day 1" (usually a Baseline visit). For example:

  • Baseline visit
    -- Timing: Day 1

  • Visit 2:
    -- Timing: Day 10
    -- Visit Window: +/- 1 day

  • Visit 3:
    --Timing: Day 30
    -- Visit Window: +/- 2 days

These relative timings have to be abstracted (as opposed to being represented as a date) because each subject in a clinical trial will start at different points in time (e.g., Subject 1 starts on May 1st; Subject 2 starts on August 5th).

Question: Has anybody figured out how to store this info in PlanDefinition? The needs on the app we're working on are:

  • Need to store which visit (PlanDefinition.Action) is the "anchor" visit (the one against which the others are timed)
  • Need to store the relative timing value and units
  • Need to store the visit window value and units.

Last updated: Apr 12 2022 at 19:14 UTC