NHIS Sources

Variable Year Supplement
ECIGEV 2014 Sample adult questionnaire
ECIGEV1 2015 Sample adult cancer
ECIGEV2 2018 Sample adult questionnaire
ECIGEV2 2017 Sample adult questionnaire
ECIGEV2 2016 Sample adult questionnaire
ECIGEV_A 2020 Sample adult questionnaire
ECIGEV_A 2019 Sample adult questionnaire