What’s New?

April 27, 2023

Ethylene Oxide Hemoglobin Adduct Data Tables Temporarily Withdrawn

On April 27, 2023, data tables for Ethylene Oxide Hemoglobin Adducts (NHANES* variable name: ETHOX) were temporarily withdrawn from the National Report on Human Exposure to Environmental Chemicals.

One year ago, a correctable calibrator bias was discovered in the ETHOX measurement impacting NHANES cycles 2013-14 and 2015-16 (What’s New? | CDC). Revised tables were released on June 6, 2022 (What’s New? | CDC). CDC recently determined that the ethylene oxide data in these files require additional adjustment to account for the bias.

The location of tables temporarily withdrawn and their associated NHANES cycle(s) are:

Analysis of Whole Blood, Serum, and Urine Samples, NHANES 1999-2018

  • Ethylene Oxide Hemoglobin Adduct in Non-smokers (2013 – 2016)
  • Ethylene Oxide Hemoglobin Adduct in Smokers (2013 – 2016)

Corrected tables will be uploaded after updated NHANES data files are made available.

*NHANES: National Health and Nutrition Examination Survey