CV Risk Factors at Age 25-64 & Long-Term Medicare Costs

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00006296
Recruitment Status : Completed
First Posted : September 26, 2000
Last Update Posted : February 18, 2016
Information provided by:
National Heart, Lung, and Blood Institute (NHLBI)

Brief Summary:
To assess in four large Chicago population cohorts whether young adult and middle-aged risk factor status has an impact not only on average annual Medicare costs, but also on cumulative and lifetime Medicare costs, to ages 70, 75, 80, >80, including to death, and during the last one to two years of life.

Condition or disease
Cardiovascular Diseases Heart Diseases

Detailed Description:


Studies will be conducted on the cumulative lifetime Medicare costs of individuals from four Chicago population cohorts from which prior risk factor data are available. One cohort is from the Western Electric Company Study, with 2107 men who were 40-56 when the follow up began in 1957. For this group a physical exam, ECG and cholesterol measures are available along with data from a quantitative diet history conducted at that time assessing 28 days of intake. It is not clear whether the men themselves or their wives provided this information. Repeat measures are available, but attention is paid to their use in the analyses. Also, information on the availability of the quantitative information at the food level is not provided. Two cohorts are from the Peoples Gas Company Study, one with 1594 men aged 40-59 in 1958 and the second with 1609 men aged 25-39 in 1959 . From both cohorts a total of 1802 men are, based on their ages, currently Medicare eligible.The fourth cohort is the Chicago Heart Disease Detection Association Project (CHA) based on an initial survey of 39,573 men and women conducted in 1967-1973 on whom dietary data are not available.


The study assesses the relationships of CVD risk factors measured in young and middle-aged adult men and women to Medicare utilization and charges, from Medicare enrollment to death or attainment of age 70, 75, 80, >80, including in the last one to two years of life. The study determines long-term relationship between earlier low-risk status vs. not-low-risk to subsequent Medicare health care charges. Baseline low risk is all six CVD risk factors favorable: systolic/diastolic pressure 120 mmHg/80 mmHg and no antihypertensive treatment, serum cholesterol <200 mg/dl, not currently smoking, no ECG abnormalities, no history of diabetes or heart attack. The study also determines the relationships between baseline habitual eating patterns and subsequent Medicare utilization and charges. Further statistical methods are developed for optimal analyses of health care expenditures. The database will be extended by obtaining additional years of morbidity-mortality experience and of Medicare charge data to the year 2002.

Study Type : Observational
Study Start Date : September 2000
Actual Primary Completion Date : July 2005
Actual Study Completion Date : July 2005

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Medicare

Information from the National Library of Medicine

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Ages Eligible for Study:   up to 100 Years   (Child, Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00006296

Sponsors and Collaborators
National Heart, Lung, and Blood Institute (NHLBI)
OverallOfficial: Martha Daviglus Northwestern University

Publications: Identifier: NCT00006296     History of Changes
Other Study ID Numbers: 913
R01HL062684 ( U.S. NIH Grant/Contract )
First Posted: September 26, 2000    Key Record Dates
Last Update Posted: February 18, 2016
Last Verified: April 2009

Additional relevant MeSH terms:
Cardiovascular Diseases
Heart Diseases