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Cardiovascular DiseasesNCT00005514

Dietary Patterns and Risk of Cardiovascular Disease

An observational study of Cardiovascular Diseases and Coronary Disease, run by Harvard School of Public Health (HSPH).

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

To study, prospectively, the association between dietary patterns and risk of coronary heart disease (CHD), ischemic stroke, and hemorrhagic stroke in cohort studies of 121,700 women age 30 to 55 years at baseline in 1976 (the Nurses; Health Study; NHS) and 51,529 men aged 40-75 years at baseline in 1986 (the Health… Read more about this study

Who is it for?
Any age
How many people
120,000 participants
Where
No sites listed yet
Study dates
Aug 1998to Jan 2009
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages Any age
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Study population: Nurses' Health Study and Health Professionals' Follow-up Study

no history of chronic diseases at baseline

About this study

To study, prospectively, the association between dietary patterns and risk of coronary heart disease (CHD), ischemic stroke, and hemorrhagic stroke in cohort studies of 121,700 women age 30 to 55 years at baseline in 1976 (the Nurses; Health Study; NHS) and 51,529 men aged 40-75 years at baseline in 1986 (the Health Professionals Follow-up Study; HPFS).

Read the detailed description

DESIGN NARRATIVE:

In the first five years of the study analyses were performed on food consumption data collected through semiquantitative food frequency questionnaires at baseline and during follow-up in the Nurses Health Study and Health Professionals Follow-up Study cohorts. Dietary patterns were derived from the food consumption data using factor analysis, cluster analysis, and dietary indexes (based on prevailing dietary recommendations). In addition, using existing datasets from dietary validation studies in sub-samples of the two cohorts, the reproducibility and validity of dietary patterns defined by factor/cluster analysis and dietary indexes were evaluated. Further, using prospectively collected and stored bloods in the NHS (n-32,826) during 1989-1990 and the HPFS (n-18,000) during 1993-1994, the investigators examined whether observed associations between dietary patterns and CHD were explained by (or mediated through) plasma biochemical measurements (including serum lipids, thrombotic factors, antioxidants, fasting insulin, and homocysteine levels) in a nested case-control design; and they assessed prospectively the relationship between dietary patterns and these biomarkers in the control samples.

The study was renewed in 2005 to apply novel statistical methods (such as confirmatory factor analysis and structural equation modeling) to validate various dietary patterns and examine their associations with risk of type 2 diabetes, cardiovascular disease and total mortality in two large ongoing cohort studies, the Nurses' Health Study (n=121,700) and Health Professionals' Follow-up Study (n=51,529). In addition to evaluating prevailing dietary recommendations, the study will also examine the role of the Mediterranean-type dietary pattern, the Dietary Approaches to Stop Hypertension (DASH) dietary pattern, and the Atkins-type diet in predicting health outcomes. Using repeated measurements of diet, the study will examine the impact of changes in eating patterns and diet quality over time on subsequent risk of diabetes, CVD, and total mortality. In addition, it will examine relationships between major dietary patterns and novel plasma biomarkers of inflammation and endothelial function and whether such relationships are mediated through obesity. Finally, the study will test interactions between dietary patterns and individual single nucleotide polymorphisms (SNPs) and haplotypes of several promising candidate genes in the inflammation and endothelial dysfunction pathway on risk of coronary heart disease, including PPARa, PPARy, Adiponectin (AdipoQ), PON1, IL-6, TNF-a, ICAM-1, VCAM-1, E-Selectin, NOS3, ACE gene, and angiotensinogen (ANG) genes.

Medical subject headings
Cardiovascular Diseases, Coronary Disease, Cerebrovascular Disorders, Heart Diseases, Stroke

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Incident cardiovascular disease

    Myocardial infarction, fatal coronary disease, and stroke documented by medical records

    Measured: 1980-2008

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted26 May 2000 (estimated)
  2. Study startAug 1998
  3. Primary completionJan 2009
  4. Study completionJan 2009

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
120,000 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00005514
Sponsor's protocol ID
5032
Other IDs
R01HL060712
Status last verified
Mar 2013
First submitted
25 May 2000
Last updated
20 Mar 2013
Results posted
No

Publications

  • Hu FB, Rimm EB, Stampfer MJ, Ascherio A, Spiegelman D, Willett WC. Prospective study of major dietary patterns and risk of coronary heart disease in men. Am J Clin Nutr. 2000 Oct;72(4):912-21. doi: 10.1093/ajcn/72.4.912.

    PubMed 11010931

  • Hu FB, Stampfer MJ, Manson JE, Grodstein F, Colditz GA, Speizer FE, Willett WC. Trends in the incidence of coronary heart disease and changes in diet and lifestyle in women. N Engl J Med. 2000 Aug 24;343(8):530-7. doi: 10.1056/NEJM200008243430802.

    PubMed 10954760

  • Digranes A, Hardardottir H, Bottolfsen KL. Temafloxacin: in vitro comparison with five other antibacterial agents. Chemotherapy. 1991;37(2):98-105. doi: 10.1159/000238840.

    PubMed 2032475

  • Hu FB, Rimm E, Smith-Warner SA, Feskanich D, Stampfer MJ, Ascherio A, Sampson L, Willett WC. Reproducibility and validity of dietary patterns assessed with a food-frequency questionnaire. Am J Clin Nutr. 1999 Feb;69(2):243-9. doi: 10.1093/ajcn/69.2.243.

    PubMed 9989687

  • McCullough ML, Feskanich D, Stampfer MJ, Rosner BA, Hu FB, Hunter DJ, Variyam JN, Colditz GA, Willett WC. Adherence to the Dietary Guidelines for Americans and risk of major chronic disease in women. Am J Clin Nutr. 2000 Nov;72(5):1214-22. doi: 10.1093/ajcn/72.5.1214.

    PubMed 11063452

  • Fung TT, Rimm EB, Spiegelman D, Rifai N, Tofler GH, Willett WC, Hu FB. Association between dietary patterns and plasma biomarkers of obesity and cardiovascular disease risk. Am J Clin Nutr. 2001 Jan;73(1):61-7. doi: 10.1093/ajcn/73.1.61.

    PubMed 11124751

  • Fung TT, Willett WC, Stampfer MJ, Manson JE, Hu FB. Dietary patterns and the risk of coronary heart disease in women. Arch Intern Med. 2001 Aug 13-27;161(15):1857-62. doi: 10.1001/archinte.161.15.1857.

    PubMed 11493127

  • Hu FB, Willett WC. Optimal diets for prevention of coronary heart disease. JAMA. 2002 Nov 27;288(20):2569-78. doi: 10.1001/jama.288.20.2569.

    PubMed 12444864

  • Osganian SK, Stampfer MJ, Rimm E, Spiegelman D, Manson JE, Willett WC. Dietary carotenoids and risk of coronary artery disease in women. Am J Clin Nutr. 2003 Jun;77(6):1390-9. doi: 10.1093/ajcn/77.6.1390.

    PubMed 12791615

  • Hu FB. Plant-based foods and prevention of cardiovascular disease: an overview. Am J Clin Nutr. 2003 Sep;78(3 Suppl):544S-551S. doi: 10.1093/ajcn/78.3.544S.

    PubMed 12936948

  • Osganian SK, Stampfer MJ, Rimm E, Spiegelman D, Hu FB, Manson JE, Willett WC. Vitamin C and risk of coronary heart disease in women. J Am Coll Cardiol. 2003 Jul 16;42(2):246-52. doi: 10.1016/s0735-1097(03)00575-8.

    PubMed 12875759

  • Halton TL, Hu FB. The effects of high protein diets on thermogenesis, satiety and weight loss: a critical review. J Am Coll Nutr. 2004 Oct;23(5):373-85. doi: 10.1080/07315724.2004.10719381.

    PubMed 15466943

  • Fung TT, Stampfer MJ, Manson JE, Rexrode KM, Willett WC, Hu FB. Prospective study of major dietary patterns and stroke risk in women. Stroke. 2004 Sep;35(9):2014-9. doi: 10.1161/01.STR.0000135762.89154.92. Epub 2004 Jul 1.

    PubMed 15232120

  • Schulze MB, Hoffmann K, Manson JE, Willett WC, Meigs JB, Weikert C, Heidemann C, Colditz GA, Hu FB. Dietary pattern, inflammation, and incidence of type 2 diabetes in women. Am J Clin Nutr. 2005 Sep;82(3):675-84; quiz 714-5. doi: 10.1093/ajcn.82.3.675.

    PubMed 16155283

  • Hu FB. Protein, body weight, and cardiovascular health. Am J Clin Nutr. 2005 Jul;82(1 Suppl):242S-247S. doi: 10.1093/ajcn/82.1.242S.

    PubMed 16002829

Questions about this trial

What is this clinical trial studying?

An observational study of Cardiovascular Diseases and Coronary Disease, run by Harvard School of Public Health (HSPH).

The full registered description is in the About this study section and the official record.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 20 Mar 2013. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Incident cardiovascular disease (time frame: 1980-2008). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00005514, which also lists 15 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 20 Mar 2013.

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