Description of covariates used in the fully adjusted model.

aFor the 2003–2004 and 2005–2006 NHANES surveys, data are given for ages 0 to 85 years; all participants who were age 85 or older were assigned an age of 85 to protect their confidentiality [35]. For 2007–2008 and 2009–2010, age data range from 0 to 80 years; for individuals older than 80 years of age, CDC assigned a value of 80 years.bFormer smokers – those who answered yes to variable SMQ020 (Have you smoked at least 100 cigarettes in your entire life? AND no to variable SMQ040 (Do you now smoke cigarettes); Current smokers – those who answered yes to variable SMQ040; and Never smokers – those who answered no to SMQ020 and SMQ040.cNHANES 2003–2004 survey asked only about heart attack but at any age.ddefined as time sitting and watching TV or videos in the past 30 days and time using the computer or playing computer games over the past 30 days; excluded as a covariate for the 2007–2008 and 2009–2010 surveys as inclusion led to unacceptably small sample size (almost all sedentary data were missing for people with urinary BPA measurements).enot available for NHANES 2009–2010.