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| Tracking Information | |||||
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| First Received Date ICMJE | May 25, 2000 | ||||
| Last Updated Date | June 23, 2005 | ||||
| Start Date ICMJE | April 1992 | ||||
| Primary Completion Date | |||||
| Current Primary Outcome Measures ICMJE | |||||
| Original Primary Outcome Measures ICMJE | |||||
| Change History | Complete list of historical versions of study NCT00005692 on ClinicalTrials.gov Archive Site | ||||
| Current Secondary Outcome Measures ICMJE | |||||
| Original Secondary Outcome Measures ICMJE | |||||
| Descriptive Information | |||||
| Brief Title ICMJE | Inflammation Markers Over Time in Cardiovascular Disease | ||||
| Official Title ICMJE | |||||
| Brief Summary | To determine inflammation markers over time in cardiovascular disease. To test the hypothesis that measures of coagulation and fibrinolysis correlate with the incidence of coronary heart disease (CHD) and other thrombosis related disorders, and to help identify those individuals at greatest risk, using the Cardiovascular Health Study (CHS) and Honolulu Heart Program (HHP) populations. These two genetically distinct populations had different event rates for CHD, and offered a unique opportunity to test associations that were uncovered by comparing results across populations. |
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| Detailed Description | BACKGROUND: Coronary heart disease (CHD) and other thrombosis related disorders are a major source of morbidity and mortality in the United States and the world. To a certain extent they are diseases of the elderly, with the majority of overt CHD occurring in persons over the age of 65. Recently, fibrinogen and factor VII have been implicated as independent CHD risk factors in middle age populations, although causative roles have not been established. These studies increased understanding of the relationship of thrombosis to cardiovascular risk. DESIGN NARRATIVE: Beginning in 1992, the study tested the hypothesis that measures of coagulation and fibrinolysis correlated with the incidence of coronary heart disease (CHD) and other thrombosis related disorders, and identified those individuals at greatest risk, using the Cardiovascular Health Study (CHS) and Honolulu Heart Program (HHP) populations. These two genetically distinct populations had different event rates for CHD, and offered a unique opportunity to test associations that were uncovered by comparing results across populations. The study examined selected measures of coagulation and fibrinolysis in individuals 65 years and older: measures of pro-coagulation (factor antigen VII, prothrombin fragment 1.2, fibrinopeptide A and thrombin - antithrombin III complex), measures of coagulation inhibition (protein C and protein S, antithrombin III, and the lipoprotein associated coagulation inhibitor (LACI), and measures of fibrinolysis (plasminogen activator inhibitor-1 (PAI-1), tissue plasminogen activator-PAI-1 complex, plasmin-alpha-2 antiplasmin complex, and Lp(a). A case/control design was used to determine the relationship between the above measurements and the incidence of CHD (and other thrombosis related disorders). The short and medium term biological variability of the above measures was determined to aid in interpretation of observed differences. Finally, the distribution of the above measurements was established in both cohorts and their relationships to other variables in the extensive CHS and HHP data bases ascertained. The study was renewed in 1999 to determine inflammation markers over time in cardiovascular disease. |
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| Study Phase | |||||
| Study Type ICMJE | Observational | ||||
| Study Design ICMJE | Natural History | ||||
| Condition ICMJE |
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| Intervention ICMJE | |||||
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| Publications * |
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* Includes publications given by the data provider as well as publications identified by National Clinical Trials Identifier (NCT ID) in Medline. |
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| Recruitment Information | |||||
| Recruitment Status ICMJE | Completed | ||||
| Enrollment ICMJE | |||||
| Completion Date | November 2002 | ||||
| Primary Completion Date | |||||
| Eligibility Criteria ICMJE | No eligibility criteria |
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| Gender | Both | ||||
| Ages | 65 Years and older | ||||
| Accepts Healthy Volunteers | No | ||||
| Contacts ICMJE | Contact information is only displayed when the study is recruiting subjects | ||||
| Location Countries ICMJE | |||||
| Administrative Information | |||||
| NCT ID ICMJE | NCT00005692 | ||||
| Responsible Party | |||||
| Study ID Numbers ICMJE | 4222 | ||||
| Study Sponsor ICMJE | National Heart, Lung, and Blood Institute (NHLBI) | ||||
| Collaborators ICMJE | |||||
| Investigators ICMJE |
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| Information Provided By | National Heart, Lung, and Blood Institute (NHLBI) | ||||
| Verification Date | March 2005 | ||||
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ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP |
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