Abstract
This paper reviews a prospective study of occupational factors in coronary heart disease risk incorporated in a randomised controlled trial of a worksite based occupational health nurse counseling program for reducing coronary heart disease risk factors. The aim of the trial was to evaluate the longterm effectiveness of the counseling program in persons with mildly elevated risk factor levels. Of the 2,489 Australian government employees with mildly elevated risk factor levels who entered the intervention trial, 1,937 (78%) attended a followup examination three years later. This paper reports on changes in systolic and diastolic blood pressure. Multiple linear regression models were used with three-year blood pressure reduction as the dependent variable, intervention status as the main determinant, and sex, age, initial risk level and initial blood pressure as covariates. Although systolic and diastolic blood pressure fell in both the intervention and control groups, intervention was significantly associated with systolic blood pressure change only.
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