The 2001–2002 National Epidemiologic Survey on Alcohol and Related Conditions (NESARC) is based on a US representative sample as described elsewhere (Grant et al., 2003; Grant et al., 2004). The target population included those residing in households and group quarters who were aged 18 years and older. Face-to-face interviews were conducted with 43,093 respondents. The survey response rate was 81%. Blacks, Hispanics, and young adults (ages 18–24 years) were oversampled with data adjusted for oversampling and nonresponse. The weighted data were then adjusted to represent the US civilian population based on the 2000 census. Demographic characteristics of the full sample are presented elsewhere (Hasin et al., 2007). Field methods included extensive home study and structured in person training, supervision, and quality control, including random call-backs to respondents to verify data, described in detail elsewhere (Grant et al., 2003; Grant et al., 2004).
