codebook / nhanes2018 / URD34MLC

URD34MLC // 3-methylhippuric acid & 4-methylhippuric acid comment code

→ use this variable in analysis ← back to dataset

attributes

datasetnhanes2018 · NHANES 2017-2018 Cycle
typecategorical
role
data fileUVOC_J
keywords

Coded values

codemeaning
0At or above the detection limit
1Below lower detection limit