C.22.PFR:4.4 - Identify repeated adverse episodes from world-side continuity

The direct occurrence rule is ontic. With the two participant occurrences fixed, one PFR occurrence is the maximal continuous episode during which both participants obtain and the selected condition point is actually on the adverse side. Actual cessation of either participant or actual movement to the non-adverse side ends that occurrence. Later renewed adverse truth starts a later PFR occurrence. Measurement, evaluation, demonstration, assessment, and evidence availability neither start nor end either occurrence.

Use this world-side identity basis:

<actualConditionRelationRef,
 problemCriterionApplicabilityRelationRef,
 adverseEpisodeStart>

adverseEpisodeStart is the episode’s actual inception under the declared temporal reference, not the first observation or report time. When admitted time grain cannot distinguish co-inceptions, or when a receiving history must keep one reference while a claim about inception remains revisable, explicitly individuate the occurrence under A.6.REL and assign a stable pfrOccurrenceId that designates it. The resolution record may carry the current boundary claim, but neither its asserted start nor its asserted end becomes a mutable identifier field. The PFR’s actualAdverseExtent is derived from the world-side episode: its end becomes fixed when the episode actually ceases, and a later claim may recover or correct that boundary. The recovered end and completed extent describe the occurrence; they do not replace it or change its assigned reference. This applies A.6.REL’s participant-plus-episode rule without making a currently known boundary constitutive.

Participant references alone remain insufficient because the same participants can enter adverse, non-adverse, and later adverse episodes. A universal evaluation reference is also insufficient because an unnoticed PFR can obtain and several assessments can support one occurrence.