Table 1 .

The Six Main Fields of the LOINC Semantic Model, as Extended for Standardized Nursing Assessment Instruments

Element	Size (chars)	Definition
Component	150	Name of the construct assessed
Property	30	Whether finding or impression
Timing	15	Whether point or interval
System	100	The body or social system assessed (e.g., eye, mouth, patient, family, caregiver, community)
Scale	30	The type of scale (e.g., quantitative, ordinal, nominal, narrative)
Method	50	Whether observed or reported, plus the instrument name (e.g., Observed.Omaha)