Assessment of Bleeding Symptoms in Normal Individuals Using a Comprehensive History Phenotyping Instrument

Rockefeller University

Status: Completed

Conditions: Bleeding Disorder

Study type: Observational

Funder types: Other

Identifiers

NCT00772434

AMA-0637

Details and patient eligibility

About

A wide variety of individuals are at risk for bleeding, but even though bleeding symptoms are common it is difficult to compare different people's symptoms. Recent research has found that carefully designed surveys can be used to calculate a bleeding score that is useful for diagnosing bleeding disorders, but normal individuals have not been specifically studied in large numbers with a comprehensive survey. Whether factors like race, ethnicity, age, sex, aspirin use, and previous trauma and surgery influence bleeding scores is also unknown. The primary goal of this study is to use a comprehensive computerized questionnaire to record the bleeding symptoms of normal individuals and then assess the range and severity of bleeding symptoms in this normal population.

Secondary goals include determining whether race, ethnicity, age, sex, aspirin use, and previous trauma and surgery correlate with bleeding symptoms.

Enrollment: 412 patients

Sex: All

Ages: 18+ years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• At least 18 years of age.
• Self-assessed as being generally healthy.
• Self-assessed as being able to accurately read and answer questions in English about their past medical histories.

Exclusion criteria

• A diagnosis of any disorder of hemostasis.
• A diagnosis of any condition associated with an increased risk of bleeding, namely, any current or previous diagnosis of liver or kidney disease, and malignancy requiring treatment within the past year.
• Use of heparin, low-molecular weight heparins, warfarin, clopidogrel, or other medications with known anticoagulant or anti-platelet properties in the past 30 days.
• History, physical, or known laboratory findings suggestive of any other medical or psychological condition that would impair the participant's ability to accurately respond to questions about bleeding symptoms.