The first two years of the project analyzed data collected on 1,548 Black and white men and women in Edgecombe County, North Carolina. The Edgecombe County data were collected in 1983 to provide data for a representative sample of households to be used in evaluating the effectiveness of a community high blood pressure control program. Approximately 50 percent of the sample was Black and 56 percent women. In the first year, measurements were made in all four race-sex groups of the effect-modifying role of John Henryism on education and on alternative measures of SES. In the second year, analyses were conducted on the degree to which job security, marriage, and socioeconomic mobility predict blood pressure in each race-sex group.