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Abstract: To guide the planning of a multifacetted hypertension control program in Edgecombe County, North Carolina. a baseline survey of a stratified (by township) random sample of 1,000 households wan conducted. All adults (>/= 18 years) were interviewed and had their blood pressures (BP) measured Five hundred thirty-nine individuals. 27 per cent of the survey population, had diastolic BP >/= 90 mm Hg or were receiving anti-hypertensive drug therapy. The 539 hypertensives were divided into seven subgroups reflecting successive stages in the control of hypertension based on the awareness, treatment, and control of their hypertension. Unaware hypertensives were further subdivided into three groups according to the recency of their last BP check, and those aware but untreated were subdivided by whether they had previously received treatment. The seven subgroups of hypertensives were compared, separately for women and men. with respect to sociodemographic characteristics, health behaviors, and health status, in general, the progression from undetected hypertension 10 treatment and control appeared to be associated with being older, female, and White. This progression was further associated with greater educational levels and higher family incomes among women and increasing self-reported morbidity among men. The implications tot intervention of these and other described associations are discussed. (Am J Public Health 1984: 74:237-242.) [ABSTRACT FROM AUTHOR]