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. Author manuscript; available in PMC: 2023 Jan 1.
Published in final edited form as: J Biomed Inform. 2021 Dec 10;125:103974. doi: 10.1016/j.jbi.2021.103974

Table 1:

Four variable examples, including their stemmed variables, labels, and level codes.

Variable Stemmed variable Label Level code: level name
Y:2000-regnocc regnocc Region of Occurrence 1: NORTHEAST
2: NORTH CENTRAL
3: SOUTH
4: WEST
Y:2000-diabetes diabetes Diabetes 1: YES
2: NO
8: MISSING
9: UNKNOWN
Y:2013-ab_aven1 ab_aven1 Assisted Ventilation N: NO
U: UNKNOWN
Y: YES
Y:2016-ab_aven1 ab_aven1 Assisted Ventilation (immediately) Y Yes N: NO
U: UNKNOWN
Y: YES