| pubmed-article:7230970 | pubmed:abstractText | A community control program for hypertension was instituted during 1972 and 1977 as a major subprogramme of the North Karelia project. The aim was to reduce the high blood-pressure levels prevalent among the whole population of the county of North Karelia. A community-based hypertension register, established according to the recommendations of the WHO, served as a central information system and ensured the continuous follow-up of the hypertensive patients. During the period May 1972 to April 1977 17 014 hypertensive subjects were registered (9.7% of the total population). The registered subjects were followed-up annually. The build-up of the registration system took two to three years, the system proved to be feasible, the percentage of non-participants during the follow-up was between 14 and 16% and the amount of missing data was insignificant. | lld:pubmed |
