McQuillan, G. et al. 2021. Assessing consent for and response to health survey components in an era of falling response rates: National Health and Nutrition Examination Survey, 2011-2018. Survey Research Methods. 15, 3 (Aug. 2021), 257–268. DOI:https://doi.org/10.18148/srm/2021.v15i3.7774.