Table 4.

Reference standard - distribution of condition attribute values used in feature vectors.

Experiencer	Existence	Certainty	Mental State	Intermittency	Change	Generalized/Conditional	Relation to Current Visit
yes (98%)	yes (89%)	unmarked (95%)	yes (95%)	unmarked (83%)	unmarked (82%)	yes (88%)	Meet/Overlap (63%)
no (2%)	no (11%)	moderate (3%)	no (5%)	yes (16%)	worsening (5%)	no (12%)	Before (29%)
		low (>1%)		no (>1%)	unchanging (4%)		After (8%)
		high (<1%)			improving (3%)
					increasing (3%)
					decreasing (2%)
					recurrence (1%)