(Hypertension. 1996;27:968-974.)
© 1996 American Heart Association, Inc.
Articles |
Community-Based Education Classes for Hypertension Control
A 1.5-Year Randomized Controlled Trial
From the Institute of Community Medicine, University of Tsukuba (H.I., T. Shimamoto, T. Sankai); Kyowa Health Center (K.Y.), Ibaraki, Japan; Division of Epidemiology, School of Public Health, University of Minnesota, Minneapolis (D.R.J.); and Osaka (Japan) Prefectural Institute of Public Health (Y.K.).
Abstract Community-based hypertension control is important for primary prevention of cardiovascular disease. In this study, untreated men and women aged 35 to 69 years were randomly assigned to an intervention (n=56) or control (n=55) group in a 1.5-year community-based education program. Subjects had no evidence of hypertensive end-organ defects and had screening blood pressures of 140 to 179 mm Hg systolic and/or 90 to 109 mm Hg diastolic, with no difference in mean blood pressure between groups (148 to 150 mm Hg for mean systolic and 83 to 84 mm Hg for mean diastolic pressures). The intervention group took four education classes in the first 6 months and four classes during the next year, and the control group took two classes. Health education focused on reduced dietary sodium and increased milk intake, brisk walking, and, if necessary, reduction of alcohol and sugar intakes. Antihypertensive medication was started less often in the intervention than in the control group at 1.5 years (9% versus 24%, P<.05). Mean systolic pressure was 5 to 6 mm Hg less in the intervention than in the control group at both 6 months and 1.5 years (P<.05), with or without inclusion of those subjects who began antihypertensive medication. Diastolic pressure and body mass index did not change significantly between groups. Urinary sodium excretion declined in the intervention but not in the control group (differences between groups: P=.04 at 6 months and P=.07 at 1.5 years). According to a behavioral questionnaire, sodium reduction and milk increase were greater in the intervention than the control group (sodium: P<.01 at 6 months and P=.08 at 1.5 years; milk: P<.001 at 6 months and P<.01 at 1.5 years). Mean ethanol intake was reduced in the intervention but not the control group (P=.04 at 1.5 years). This community-based hypertension control program was effective in reducing systolic pressure levels by nonpharmacological means during the first 6 months and maintaining the reduction for 1.5 years.
Key Words: education • lifestyle • sodium, dietary • clinical trials • community health services
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