Vietnam Era Twin (VET) Registry - Tabular View

Tracking Information
First Received Date ^ICMJE	May 25, 2000
Last Updated Date	June 23, 2005
Start Date ^ICMJE	April 1989
Primary Completion Date
Current Primary Outcome Measures ^ICMJE
Original Primary Outcome Measures ^ICMJE
Change History	Complete list of historical versions of study NCT00005126 on ClinicalTrials.gov Archive Site
Current Secondary Outcome Measures ^ICMJE
Original Secondary Outcome Measures ^ICMJE

Descriptive Information
Brief Title ^ICMJE	Vietnam Era Twin (VET) Registry
Official Title ^ICMJE
Brief Summary	To conduct a baseline survey on cardiovascular, respiratory, and other major systemic disease and risk factors in members of the Vietnam Era Twin Registry.
Detailed Description	BACKGROUND: The Vietnam Veteran Twin Registry, maintained by the NAS-NRC, was created with funding from the Veterans Administration. Department of Defense records were searched for subjects born between 1939-1957 and having the same last name and date of birth. Follow-up of induction records determined if the subjects were twins. The registry supplemented the older World War II Veterans Twin Registry supported by the National Heart, Lung, and Blood Institute. The new registry provided an opportunity to create a resource with Black and Hispanic twins as well as whites. The new registry also included data on greater educational, socioeconomic, and lifestyle diversity than was available in the World War II Veterans Twin Registry. DESIGN NARRATIVE: During the first year a mailed questionnaire was designed which provided baseline data on family history, body size, morbidity, psychosocial characteristics, smoking, alcohol consumption, diet, physical activity, and drug use. The baseline data were used for analysis of cardiovascular, pulmonary, and blood diseases, and for follow-up. From the original survey, the Veterans Administration provided magnetic tape data on zygosity, smoking, alcohol consumption, heart, lung, and blood diseases, discharge rank, education, occupation, and family income. The questionnaire was completed by almost 8,900 individuals including over 3,000 twin pairs.
Study Phase
Study Type ^ICMJE	Observational
Study Design ^ICMJE	Natural History
Condition ^ICMJE	Cardiovascular Diseases Blood Disease Heart Diseases Lung Diseases
Intervention ^ICMJE
Study Arms / Comparison Groups
Publications *	Fabsitz RR, Sholinsky P, Goldberg J. Correlates of sleep problems among men: the Vietnam Era Twin Registry. J Sleep Res. 1997 Mar;6(1):50-6.
* Includes publications given by the data provider as well as publications identified by National Clinical Trials Identifier (NCT ID) in Medline.

Recruitment Information
Recruitment Status ^ICMJE	Completed
Enrollment ^ICMJE
Completion Date	March 1991
Primary Completion Date
Eligibility Criteria ^ICMJE	No eligibility criteria
Gender	Male
Ages
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	NCT00005126
Responsible Party
Study ID Numbers ^ICMJE	905
Study Sponsor ^ICMJE	National Heart, Lung, and Blood Institute (NHLBI)
Collaborators ^ICMJE
Investigators ^ICMJE
Information Provided By	National Heart, Lung, and Blood Institute (NHLBI)
Verification Date	May 2000
^ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP