Table 1

Sociodemographic characteristics for adolescents (aged 11–18) with dietary data from the four USDA surveys

  • The four USDA surveys are the Nationwide Food Consumption Survey 1965 and 1977, and the Continuing Survey of Food Intake by Individuals 1989–91 and 1994–96.

  • 1-150 USDA began collecting data on Hispanic origin in 1977; the remaining percentage represents other minorities.

  • 1-151 In 1965, USDA coded this variable as urban, rural non-farm, and rural farm. The only comparable variable we could create was rural by adding the two rural categories. The other 64% is thus a combination of central city and suburban.