title: The intervention effects of a community-based hypertension control programme in two rural South African towns: the CORIS Study.
abstract: The objective of the hypertension programme of the Coronary Risk Factor Study (CORIS) was to evaluate the effectiveness of the first 4 years of community-based intervention. The hypertension intervention model comprised a blood pressure station where the whole population was screened for hypertension, non-drug management was provided and hypertensives were monitored after referral to general practitioners for drug therapy. Two levels of intervention were maintained: in the high-intensity intervention town (N = 2,278) hypertensives were actively followed up, and in the low-intensity intervention town (N = 2,620) no active follow-up procedure existed. A third town acted as control (N = 2,290). In the cohort which was hypertensive at baseline, the net decreases in systolic blood pressure (mean +/- SE) after correction for changes in the control town were 0.5 +/- 2.2 mmHg (men) and 4.5 +/- 2.2 mmHg (women) in the low-intensity intervention town, and 5.6 +/- 2.3 mmHg (men) and 7.5 +/- 2.2 mmHg (women) in the high-intensity intervention town. The net decrease in diastolic blood pressure was 3.4 +/- 1.2 mmHg (men) and 4.4 +/- 1.1 mmHg (women) in the low-intensity intervention town, and 6.1 +/- 1.2 mmHg (men) and 5.9 +/- 1.1 mmHg (women) in the high-intensity intervention town. These reductions were statistically significant with one exception. The changes in the total population in the 3 communities after 4 years of intervention were similar to those found in the hypertensive cohort.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Centre for Epidemiological Research in Southern Africa, Research Institute for Nutritional Diseases, Parowvallei, CP.
authors.forename: K
authors.initials: K
authors.lastname: Steyn
authors.forename: J E
authors.initials: JE
authors.lastname: Rossouw
authors.forename: P L
authors.initials: PL
authors.lastname: Jooste
authors.forename: D O
authors.initials: DO
authors.lastname: Chalton
authors.forename: E R
authors.initials: ER
authors.lastname: Jordaan
authors.forename: P C
authors.initials: PC
authors.lastname: Jordaan
authors.forename: M
authors.initials: M
authors.lastname: Steyn
authors.forename: A S
authors.initials: AS
authors.lastname: Swanepoel
mesh_terms: D000293:Adolescent; D000328:Adult; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D006973:Hypertension / Q000517:prevention & control*; D008297:Male; D008875:Middle Aged; D011314:Preventive Health Services; D012424:Rural Population; D013019:South Africa