Cardiovascular DiseasesNCT00005262
Epidemiology of Idiopathic Dilated Cardiomyopathy (Washington, DC Dilated Cardiomyopathy Study)
An observational study of Cardiovascular Diseases and Heart Diseases, run by National Heart, Lung, and Blood Institute (NHLBI).
Trial summary
To identify risk factors for idiopathic dilated cardiomyopathy and to examine prognostic factors over a follow-up period of two to three years. Read more about this study
- Who is it for?
- Ages Up to 100 years, men only
- Conditions the study is for
- Cardiovascular Diseases, Heart Diseases, Myocardial Diseases
- How many people
- Not given
- Where
- No sites listed yet
- Study dates
- Jul 1990to Jun 1996
- 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 Up to 100 years
- Men only
- No healthy volunteers
- Child, Adult, Older adult
No eligibility criteria
About this study
To identify risk factors for idiopathic dilated cardiomyopathy and to examine prognostic factors over a follow-up period of two to three years.
Read the detailed description
BACKGROUND:
Idiopathic dilated cardiomyopathy is an often fatal cause of heart failure in young adults which is characterized by dilatation of the ventricles, increased myocardial mass, and impairment of systolic function. Dilated cardiomyopathy is more common than hypertrophic and restrictive cardiomyopathy, and the symptoms and physical signs are those of left-sided and eventually right-sided heart failure. Histologic findings in the condition include nonspecific interstitial myocardial fibrosis and myocyte hypertrophy. Despite the large number of systemic or generalized disease processes which have been associated with secondary dilated cardiomyopathy, the majority of cases are idiopathic. Mortality rates from cardiomyopathy have increased dramatically since 1970, and in 1990 over 10,000 deaths annually were attributed to cardiomyopathy in the United States.
DESIGN NARRATIVE:
The study had a prospective case-control design. Medical records of possible cases of idiopathic dilated cardiomyopathy who were discharged from five Washington, D. C. acute care hospitals over a two year period were abstracted so that standard diagnostic criteria could be applied. Two neighborhood controls were identified for each case. Cases and controls were matched on five year age intervals, sex, and telephone exchange. Cases were contacted annually during the two to three year follow-up period to determine vital status. The study determined whether the reported association between idiopathic dilated cardiomyopathy and asthma could be confirmed and the possible role of asthma medications, cigarette smoking, moderate alcohol consumption, and diabetes mellitus in the etiology of idiopathic dilated cardiomyopathy. The role of hypertension was also studied.. Statistical analysis consisted of case-control comparisons using conditional logistic regression techniques, and survival analyses using Kaplan-Meier curves and proportional hazards models.
The study was also known as the Washington, D.C. Dilated Cardiomyopathy Study. Dr. Coughlin started his research at Georgetown University in Washington, D.C. and transferred to Tulane University.
The study completion date listed in this record was obtained from the "End Date" entered in the Protocol Registration and Results System (PRS) record.
- Conditions
- Cardiovascular Diseases, Heart Diseases, Myocardial Diseases, Asthma, Diabetes Mellitus, Hypertension
- Medical subject headings
- Cardiovascular Diseases, Heart Diseases, Cardiomyopathies, Asthma, Diabetes Mellitus, Hypertension
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted26 May 2000 (estimated)
- Study startJul 1990
- Study completionJun 1996
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (20)Papers the sponsor has linked to this study.
- Other trials for Cardiovascular DiseasesStudies of the same condition, open and under way.
- More trials run by National Heart, Lung, and Blood Institute (NHLBI)The sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
Sponsor and investigators
- Sponsor type
- US National Institutes of Health
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00005262
- Sponsor's protocol ID
- 1146
- Other IDs
- R29HL044904
- Status last verified
- May 2000
- First submitted
- 25 May 2000
- Last updated
- 13 May 2016
- Results posted
- No
Publications
Coughlin SS, Myers L, Michaels RK. What explains black-white differences in survival in idiopathic dilated cardiomyopathy? The Washington, DC, Dilated Cardiomyopathy Study. J Natl Med Assoc. 1997 Apr;89(4):277-82.
PubMed 9145633Metayer C, Coughlin SS, Mather FJ. Does cigarette smoking paradoxically increase survival in idiopathic dilated cardiomyopathy?. The Washington, D.C., Dilated Cardiomyopathy Study. Cardiology. 1996 Nov-Dec;87(6):502-8. doi: 10.1159/000177146.
PubMed 8904678Coughlin SS, Rice JC. Obesity and idiopathic dilated cardiomyopathy. Epidemiology. 1996 Nov;7(6):629-32. doi: 10.1097/00001648-199611000-00011.
PubMed 8899390Coughlin SS, Tefft MC, Rice JC, Gerone JL, Baughman KL. Epidemiology of idiopathic dilated cardiomyopathy in the elderly: pooled results from two case-control studies. Am J Epidemiol. 1996 May 1;143(9):881-8. doi: 10.1093/oxfordjournals.aje.a008831.
PubMed 8610701Coughlin SS, Pickle LW, Goodman MT, Wilkens LR. The logistic modeling of interobserver agreement. J Clin Epidemiol. 1992 Nov;45(11):1237-41. doi: 10.1016/0895-4356(92)90164-i.
PubMed 1432004Coughlin SS, Beauchamp TL. Ethics, scientific validity, and the design of epidemiologic studies. Epidemiology. 1992 Jul;3(4):343-7. doi: 10.1097/00001648-199207000-00009.
PubMed 1637897Coughlin SS, Pickle LW. Sensitivity and specificity-like measures of the validity of a diagnostic test that are corrected for chance agreement. Epidemiology. 1992 Mar;3(2):178-81. doi: 10.1097/00001648-199203000-00017.
PubMed 1576224Coughlin SS, Trock B, Criqui MH, Pickle LW, Browner D, Tefft MC. The logistic modeling of sensitivity, specificity, and predictive value of a diagnostic test. J Clin Epidemiol. 1992 Jan;45(1):1-7. doi: 10.1016/0895-4356(92)90180-u.
PubMed 1738006Coughlin SS, Nass CC, Pickle LW, Trock B, Bunin G. Regression methods for estimating attributable risk in population-based case-control studies: a comparison of additive and multiplicative models. Am J Epidemiol. 1991 Feb 1;133(3):305-13. doi: 10.1093/oxfordjournals.aje.a115875.
PubMed 2000848Coughlin SS, Chiazze L Jr. Job-exposure matrices in epidemiologic research and medical surveillance. Occup Med. 1990 Jul-Sep;5(3):633-46.
PubMed 2218806Coughlin SS, Metayer C, McCarthy EP, Mather FJ, Waldhorn RE, Gersh BJ, DuPraw S, Baughman KL. Respiratory illness, beta-agonists, and risk of idiopathic dilated cardiomyopathy. The Washington, DC, Dilated Cardiomyopathy Study. Am J Epidemiol. 1995 Aug 15;142(4):395-403. doi: 10.1093/oxfordjournals.aje.a117647.
PubMed 7625404Benton RE, Coughlin SS, Tefft MC. Predictors of coronary angiography in patients with idiopathic dilated cardiomyopathy: the Washington, DC Dilated Cardiomyopathy Study. J Clin Epidemiol. 1994 May;47(5):501-11. doi: 10.1016/0895-4356(94)90297-6.
PubMed 7730876Coughlin SS, Gottdiener JS, Baughman KL, Wasserman A, Marx ES, Tefft MC, Gersh BJ. Black-white differences in mortality in idiopathic dilated cardiomyopathy: the Washington, DC, dilated cardiomyopathy study. J Natl Med Assoc. 1994 Aug;86(8):583-91.
PubMed 7932836Coughlin SS, Tefft MC. The epidemiology of idiopathic dilated cardiomyopathy in women: the Washington DC Dilated Cardiomyopathy Study. Epidemiology. 1994 Jul;5(4):449-55. doi: 10.1097/00001648-199407000-00012.
PubMed 7918816Coughlin SS, Pearle DL, Baughman KL, Wasserman A, Tefft MC. Diabetes mellitus and risk of idiopathic dilated cardiomyopathy. The Washington, DC Dilated Cardiomyopathy Study. Ann Epidemiol. 1994 Jan;4(1):67-74. doi: 10.1016/1047-2797(94)90044-2.
PubMed 8205273
Study at a glance
From the registry record, last updated by the sponsor on 13 May 2016. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Epidemiology of Idiopathic Dilated Cardiomyopathy (Washington, DC Dilated Cardiomyopathy Study)
- ClinicalTrials.gov ID
- NCT00005262
- Acronym / sponsor ID
- 1146
- Conditions
- Cardiovascular Diseases, Heart Diseases, Myocardial Diseases, Asthma, Diabetes Mellitus, Hypertension
- Study type
- Observational
- Recruitment status
- Completed
- Lead sponsor
- National Heart, Lung, and Blood Institute (NHLBI)US National Institutes of Health
- Study start
- Jul 1990
- Study completion
- Jun 1996 (actual)
- First posted
- 26 May 2000 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
To identify risk factors for idiopathic dilated cardiomyopathy and to examine prognostic factors over a follow-up period of two to three years.
Detailed description
BACKGROUND:
Idiopathic dilated cardiomyopathy is an often fatal cause of heart failure in young adults which is characterized by dilatation of the ventricles, increased myocardial mass, and impairment of systolic function. Dilated cardiomyopathy is more common than hypertrophic and restrictive cardiomyopathy, and the symptoms and physical signs are those of left-sided and eventually right-sided heart failure. Histologic findings in the condition include nonspecific interstitial myocardial fibrosis and myocyte hypertrophy. Despite the large number of systemic or generalized disease processes which have been associated with secondary dilated cardiomyopathy, the majority of cases are idiopathic. Mortality rates from cardiomyopathy have increased dramatically since 1970, and in 1990 over 10,000 deaths annually were attributed to cardiomyopathy in the United States.
DESIGN NARRATIVE:
The study had a prospective case-control design. Medical records of possible cases of idiopathic dilated cardiomyopathy who were discharged from five Washington, D. C. acute care hospitals over a two year period were abstracted so that standard diagnostic criteria could be applied. Two neighborhood controls were identified for each case. Cases and controls were matched on five year age intervals, sex, and telephone exchange. Cases were contacted annually during the two to three year follow-up period to determine vital status. The study determined whether the reported association between idiopathic dilated cardiomyopathy and asthma could be confirmed and the possible role of asthma medications, cigarette smoking, moderate alcohol consumption, and diabetes mellitus in the etiology of idiopathic dilated cardiomyopathy. The role of hypertension was also studied.. Statistical analysis consisted of case-control comparisons using conditional logistic regression techniques, and survival analyses using Kaplan-Meier curves and proportional hazards models.
The study was also known as the Washington, D.C. Dilated Cardiomyopathy Study. Dr. Coughlin started his research at Georgetown University in Washington, D.C. and transferred to Tulane University.
The study completion date listed in this record was obtained from the "End Date" entered in the Protocol Registration and Results System (PRS) record.
Study design
Who may qualify
- Ages
- Up to 100 years
- Sex
- Male only
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Not reported in the source record.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 May 2016.
- Background: PubMed 9145633Coughlin SS, Myers L, Michaels RK. What explains black-white differences in survival in idiopathic dilated cardiomyopathy? The Washington, DC, Dilated Cardiomyopathy Study. J Natl Med Assoc. 1997 Apr;89(4):277-82.
- Background: PubMed 8904678Metayer C, Coughlin SS, Mather FJ. Does cigarette smoking paradoxically increase survival in idiopathic dilated cardiomyopathy?. The Washington, D.C., Dilated Cardiomyopathy Study. Cardiology. 1996 Nov-Dec;87(6):502-8. doi: 10.1159/000177146.
- Background: PubMed 8899390Coughlin SS, Rice JC. Obesity and idiopathic dilated cardiomyopathy. Epidemiology. 1996 Nov;7(6):629-32. doi: 10.1097/00001648-199611000-00011.
- Background: PubMed 8610701Coughlin SS, Tefft MC, Rice JC, Gerone JL, Baughman KL. Epidemiology of idiopathic dilated cardiomyopathy in the elderly: pooled results from two case-control studies. Am J Epidemiol. 1996 May 1;143(9):881-8. doi: 10.1093/oxfordjournals.aje.a008831.
- Background: PubMed 1432004Coughlin SS, Pickle LW, Goodman MT, Wilkens LR. The logistic modeling of interobserver agreement. J Clin Epidemiol. 1992 Nov;45(11):1237-41. doi: 10.1016/0895-4356(92)90164-i.
- Background: PubMed 1637897Coughlin SS, Beauchamp TL. Ethics, scientific validity, and the design of epidemiologic studies. Epidemiology. 1992 Jul;3(4):343-7. doi: 10.1097/00001648-199207000-00009.
- Background: PubMed 1576224Coughlin SS, Pickle LW. Sensitivity and specificity-like measures of the validity of a diagnostic test that are corrected for chance agreement. Epidemiology. 1992 Mar;3(2):178-81. doi: 10.1097/00001648-199203000-00017.
- Background: PubMed 1738006Coughlin SS, Trock B, Criqui MH, Pickle LW, Browner D, Tefft MC. The logistic modeling of sensitivity, specificity, and predictive value of a diagnostic test. J Clin Epidemiol. 1992 Jan;45(1):1-7. doi: 10.1016/0895-4356(92)90180-u.
- Background: PubMed 2000848Coughlin SS, Nass CC, Pickle LW, Trock B, Bunin G. Regression methods for estimating attributable risk in population-based case-control studies: a comparison of additive and multiplicative models. Am J Epidemiol. 1991 Feb 1;133(3):305-13. doi: 10.1093/oxfordjournals.aje.a115875.
- Background: PubMed 2218806Coughlin SS, Chiazze L Jr. Job-exposure matrices in epidemiologic research and medical surveillance. Occup Med. 1990 Jul-Sep;5(3):633-46.
- Background: PubMed 7625404Coughlin SS, Metayer C, McCarthy EP, Mather FJ, Waldhorn RE, Gersh BJ, DuPraw S, Baughman KL. Respiratory illness, beta-agonists, and risk of idiopathic dilated cardiomyopathy. The Washington, DC, Dilated Cardiomyopathy Study. Am J Epidemiol. 1995 Aug 15;142(4):395-403. doi: 10.1093/oxfordjournals.aje.a117647.
- Background: PubMed 7730876Benton RE, Coughlin SS, Tefft MC. Predictors of coronary angiography in patients with idiopathic dilated cardiomyopathy: the Washington, DC Dilated Cardiomyopathy Study. J Clin Epidemiol. 1994 May;47(5):501-11. doi: 10.1016/0895-4356(94)90297-6.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
An observational study of Cardiovascular Diseases and Heart Diseases, run by National Heart, Lung, and Blood Institute (NHLBI).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 13 May 2016. 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.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00005262, which also lists 20 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 13 May 2016.