Specifications Table

Subject	Environmental Science
Specific subject area	Environmental health
Type of data	Tables
How data were acquired	Downloaded from US National Center for Health Statistics and analyzed using SAS-Callable SUDAAN 10 statistical software
Data format	Raw, and analyzed.
Parameters for data collection	Restricted to children who participated in the National Health and Nutrition Examination Survey (NHANES) with available environmental chemical biomonitoring and liver enzyme data.
Description of data collection	Data collection on sociodemographic characteristics, chemical exposure and serum biomarkers of liver function.
Data source location	NHANES—a program of studies designed to assess the health and nutritional status of adults and children in the United States of America conducted by the National Center for Health Statistics (NCHS).
Data accessibility	Data are available from the US National Center for Health Statistics. https://wwwn.cdc.gov/nchs/nhanes/ContinuousNhanes/Default.aspx?BeginYear=2011 https://wwwn.cdc.gov/nchs/nhanes/ContinuousNhanes/Default.aspx?BeginYear=2013
Related research article	Attanasio R. Sex Differences in the association between perfluoroalkyl acids and liver function in US adolescents: analyses of NHANES 2013–2016. Environ Pollut 2019 Nov; 254(Pt B):113061 https://doi.org/10.1016/j.envpol.2019.113061.