Epidemiology of Venous Disease

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: NCT00005392
Recruitment Status : Completed
First Posted : May 26, 2000
Last Update Posted : February 29, 2016
Information provided by:
National Heart, Lung, and Blood Institute (NHLBI)

Brief Summary:
To conduct several studies on the epidemiology of venous disease.

Condition or disease
Cardiovascular Diseases Peripheral Vascular Diseases Telangiectasis

Detailed Description:


Venous disease is commonplace, more prevalent in women, increases with age, and is a major cause of morbidity. Between 6 and 30 percent of all medical expenditures for cardiovascular disease are for venous disease. Despite these facts, the basic epidemiology of venous disease has received limited attention. Even the definition of peripheral venous disease varies widely, often confusing symptoms and signs with demonstrable pathophysiologic abnormalities.

This study provided estimates of the extent of peripheral venous disease, contributed to more efficient diagnosis, allowed insight on how to prevent or ameliorate this condition through risk factor modification, and provided quantitative estimates of the daily burden this disease imposes on patients.


The overall, and age, sex, and ethnic-specific, prevalence of peripheral venous disease was determined in a stratified multiethnic random sample of 2,408 men and women aged 29 to 91 years. Three specific categories of venous disease were defined including: telangiectasias and flat reticular veins; superficial venous disease without deep valvular incompetence or obstruction; deep venous disease, with valvular incompetence or obstruction. Varicose veins were typically but not invariably present in the latter two categories. These three categories were diagnosed by an ordered non-invasive evaluation, including visual inspection, with photographic documentation of abnormal findings, and duplex color sonography to diagnose valvular incompetence and venous obstruction.

An evaluation was made of the sensitivity, specificity, and predictive value of each of the traditional signs and symptoms of venous disease for each of the three categories of venous disease. Signs and symptoms evaluated included aching, itching, swelling and edema, heaviness, cramps, nocturnal restless legs, pigmentation, induration, ulcers, and the Trendelenburg test. Risk factors were evaluated for each of the above three categories-of venous disease. Risk factors assessed included age; sex; ethnicity; socioeconomic status; height; weight; obesity; exercise; blood pressure; standing versus sitting in daily activities; family history of venous disease; cigarette smoking; alcohol consumption; diet; constipation; constrictive clothing; aspirin use; use of selected other medications; history of hernia, flat feet, or other conditions associated with connective tissue laxity; parity; use of estrogens or progestins; age at menarche; age at menopause; and concomitant arterial disease. Finally, an evaluation was made of the degree of morbidity and interference with daily activities resulting from venous disease, using the Quality of Well Being (QWB) scale developed at University of California at San Diego.

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 Type : Observational
Study Start Date : September 1995
Actual Study Completion Date : July 2000

Information from the National Library of Medicine

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Ages Eligible for Study:   29 Years to 91 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
No eligibility criteria

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): NCT00005392

Sponsors and Collaborators
National Heart, Lung, and Blood Institute (NHLBI)
OverallOfficial: Michael Criqui University of California, San Diego