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Diet and Plasma Cholesterol - Secular Trend Analysis

This study has been completed.
Information provided by:
National Heart, Lung, and Blood Institute (NHLBI) Identifier:
First received: May 25, 2000
Last updated: June 23, 2005
Last verified: March 2005

To define the role of dietary variables on changes in plasma cholesterol levels over time in the Framingham cohort and the Framingham Offspring cohort.

Cardiovascular Diseases
Heart Diseases
Coronary Disease

Study Type: Observational

Resource links provided by NLM:

Further study details as provided by National Heart, Lung, and Blood Institute (NHLBI):

Study Start Date: May 1990
Estimated Study Completion Date: April 1992
Detailed Description:


Mortality from coronary heart disease has declined over 40 percent since the late 1960s. Possible explanations for the decline include the observed trends in risk factors such as changes in rates of hypertension, dyslipidemia, and glucose intolerance; lifestyle changes such as improvements in diet and decreases in the levels of cigarette smoking; and better detection and treatment of heart disease. The specific effects of risk factor, lifestyle, or detection and treatment changes on the declining population rates of coronary heart disease morbidity and mortality were unknown in 1990. Secular trend analyses were needed to elucidate the relative contribution of these factors, particularly dietary variables, on population rates of coronary heart disease.


Multiple regression was used to assess the effect of dietary variables on changes in serum cholesterol between 1957-1960 and 1966-1969 in a sample of 200 men for whom repeated measurements existed in the Framingham cohort. Analysis of covariance was used to assess influence of dietary intake on differences in serum cholesterol levels between independent samples of men studied in 1957-1960 and 1966-1969 in the Framingham cohort, and independent samples of women studied between 1957-1960 and 1984-1988 in the Framingham cohort and Offspring cohort, and independent samples of men studied between 1966-1969 and 1984-1988 in the Framingham cohort and Offspring cohorts respectively.


Genders Eligible for Study:   Male
Accepts Healthy Volunteers:   No

No eligibility criteria

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Please refer to this study by its identifier: NCT00005257

Sponsors and Collaborators
Investigator: Barbara Posner Boston University
  More Information

Publications: Identifier: NCT00005257     History of Changes
Other Study ID Numbers: 1139
Study First Received: May 25, 2000
Last Updated: June 23, 2005
Health Authority: United States: Federal Government

Additional relevant MeSH terms:
Cardiovascular Diseases
Coronary Artery Disease
Coronary Disease
Heart Diseases
Arterial Occlusive Diseases
Lipid Metabolism Disorders
Metabolic Diseases
Myocardial Ischemia
Vascular Diseases processed this record on November 25, 2014