Table 6:

Distribution of the concepts identified by the age rule QA but ended up not requiring age rule in the Map (false positives)

False positive category	Candidate concept counts	Percentage over all the false positives	Percentage over all concepts flagged for age rule
Conflict with SNOMED CT modifier	63	37.1%	18.4%
Multiple positions in alpha index	51	30.0%	14.9%
Questionable index entry	45	26.5%	13.2%
Identical target as default	11	6.5%	3.2%
Total	170	100.0%	49.7%