Phase III, conducted in year four, consisted of a randomized trial of an intensive nutrition intervention which was designed for the culture and was compared with usual advertising and food-selection influence techniques in eight fast food restaurants and four large food markets in East Baltimore. Outcomes included the shift in sales from high to low fat and salt alternatives (as determined by computerized sales and inventory data) during the intervention and two weeks following the intervention. All interventions in Phase II and III evolved from the focus groups and survey work performed in Phase I.