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

Completed

• Conditions: Bleeding Disorder

• Registration Number: NCT00772434
• Lead Sponsor: Rockefeller University

Brief Summary

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.

Detailed Description

Not available

Study Timeline

• Study Start: 2008-09
• Study First Submitted: 2008-10-14
• Study First Submitted QC: 2008-10-14
• Study First Posted: 2008-10-15
• Primary Completion: 2011-05
• Study Completion: 2011-05
• Status Verified: 2011-11
• Last Update Submitted: 2011-11-17
• Last Update Posted: 2011-11-18

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 412

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.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Answers to bleeding history questions posed in the questionnaire and cofactors, such as participants' age, sex, history of prior hemostatic challenge, ASA use, ethnicity, and race.	During study visit

Trial Locations

Locations (1)

Rockefeller University Hospital; 🇺🇸 New York, New York, United States