Protocol - Deep Venous Thrombosis

Description

A screening question is asked about whether a person has been told that they have deep venous thrombosis (DVT) or blood clots in their legs. If the response is "yes," then two questions are asked about treatment for the condition. The third protocol provides a method to improve documentation of the condition by abstracting additional information from the persons medical record about the history and laboratory findings of DVT.

Specific Instructions

If the respondent answers "no" or "dont know" to question 1, the protocol is complete. If the respondent answers "yes," continue with the protocol.

This protocol refers to diagnoses during the subjects lifetime. For users wishing to collect longitudinal data, the question could be asked in relation to a previous study visit.

Availability

Available

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Protocol

1. Has a doctor ever told you that you had deep venous thrombosis or blood clots in your legs?

1[ ]Yes

0[ ]No

9[ ]Dont Know

2. Have you ever been treated by a doctor or a nurse with shots at home or as an outpatient (usually followed by blood thinning medications such as Coumadin, Warfarin) for blood clots in the legs called deep vein thrombosis or DVT?

1[ ]Yes

0[ ]No

3. Have you ever had outpatient test(s) performed for blood clots in the legs called deep vein thrombosis or DVT?

1[ ]Yes

0[ ]No

Complete the following for all hospitalized pulmonary embolism (PE)/deep vein thrombosis (DVT).

Complete the following if outpatient (OP) records confirm deep vein thrombosis (DVT) or an autopsy report confirms pulmonary embolism.

4. Deep vein thrombosis (DVT)

1[ ]Yes

2[ ]No

4a. Date of Diagnosis: (M/D/Y) ___ / ___ / _____

4b. Diagnosis: (Mark the one category that applies best.)

1[ ]Deep vein thrombosis of lower extremities not resulting from a procedure within 60 days

2[ ]Deep vein thrombosis of lower extremities during or following a procedure within 60 days

4c. Diagnosis of deep vein thrombosis is based on: (Mark all that apply.)

1[ ]Hospital discharge summary with a diagnosis of deep vein thrombosis

2[ ]Positive findings on a venogram

3[ ]Positive findings using impedance plethysmography

4[ ]Positive findings on doppler duplex, ultrasound, sonogram, or other non-invasive test examination

5[ ]Positive findings on isotope scan

4d. Diagnosis of deep vein thrombosis reporting source: (Mark one. If more than one category applies, mark the first applicable category.)

1[ ]Hospital inpatient

2[ ]Hospital outpatient facility or clinic

3[ ]Radiology or imaging facility

4[ ]Physicians office/private medical practitioner

5[ ]Nursing/convalescent home/hospice

6[ ]Autopsy only

7[ ]Death Certificate only

8[ ]Other

Diagnostic Criteria:

The presence of thrombus within a deep vein of a lower extremity only and the accompanying inflammatory response in vessel wall is termed deep vein thrombosis. The diagnosis can be made when the diagnosis is present in the discharge summary and any of the following are recorded:

Positive findings on a venogram, defined as presence of a filling defect or absence of filling.
Positive findings on impedance plethysmography, duplex scan, or ultrasound, defined as a report of a flow defect.
Positive findings on doppler examination, defined as a demonstration of flow velocity disturbance.
Positive findings on isotope scan (e.g., I125 fibrinogen scan).

Personnel and Training Required

An interviewer who is trained to conduct personal interviews with individuals from the general population is required. The interviewer must be trained and found to be competent (i.e., tested by an expert) at the completion of personal interviews.* The interviewer should be trained to prompt respondents further if a "dont know" response is provided. Additionally, this person should be trained on how to perform medical record and chart abstraction.

*There are multiple modes to administer this question (e.g., paper-and-pencil and computer-assisted interviews).

A trained and certified Hospital Record Abstractor is required to complete the protocol from the Womens Health Initiative, Form 126. This person should be trained on how to perform medical record and chart abstraction using various hospital records.

Equipment Needs

None

Requirements

Requirement Category	Required
Major equipment	No
Specialized training	Yes
Specialized requirements for biospecimen collection	No
Average time of greater than 15 minutes in an unaffected individual	No

Mode of Administration

Interviewer-administered question, Medical record abstraction

Lifestage

Adult

Participants

Cardiovascular Health Study (CHS): ≥65 years old

Womens Health Initiative (WHI): Women ages 50–79* years old

*While this questionnaire was used in a womens study, the Cardiovascular Working Group deems it appropriate to use with men.

Selection Rationale

The combination of these two protocols provides sufficient evidence to determine a history of deep venous thrombosis. The two protocols have been used on major U.S. health studies and are reliable and valid.

Language

Chinese, English

Standards

Standard	Name	ID	Source
Logical Observation Identifiers Names and Codes (LOINC)	Deep venous thrombosis proto	62401-5	LOINC
Human Phenotype Ontology	Deep vein thrombosis	HP:0002625	HPO
caDSR Form	PhenX PX041201 - Deep Venous Thrombosis	5849476	caDSR Form

Derived Variables

None

Process and Review

Not applicable.

Protocol Name from Source

Womens Health Initiative (WHI) & Cardiovascular Health Study (CHS)

Source

U.S. Department of Health and Human Services. National Institutes of Health. National Heart, Lung and Blood Institute. Cardiovascular Health Study (CHS). Baseline Medical History Questionnaire. Page 5. Question 9 (source for question 1).

U.S. Department of Health and Human Services. National Institutes of Health. National Heart, Lung and Blood Institute. Womens Health Initiative (WHI). Form 33D—Medical History Update. Version 4. Questions 3.3–3.5 (source for questions 2 and 3).

U.S. Department of Health and Human Services. National Institutes of Health. National Heart, Lung and Blood Institute. Womens Health Initiative (WHI). Form 126—Report of Venous Thromboembolic Disease (HRT). Question 1 (source for questions 4–4d).

Diagnostic Criteria: U.S. Department of Health and Human Services. National Institutes of Health. National Heart, Lung and Blood Institute. Womens Health Initiative (WHI). Volume 8, Section 8—Other Outcomes. Subsection 8.1.1 (source for Diagnostic Criteria).

General References

Ives, D. G., Fitzpatrick, A. L., Bild, D. E., Psaty, B. M., Kuller, L. H., Crowley, P. M., Cruise, R. G., & Theroux, S. (1995). Surveillance and ascertainment of cardiovascular events. The Cardiovascular Health Study. Annals of Epidemiology, 5, 278–285.

Psaty, B. M., Kuller, L. H., Bild, D., Burke, G. L., Kittner, S. J., Mittelmark, M., Price, T. R., Rautaharju, P. M., & Robbins, J. (1995). Methods of assessing prevalent cardiovascular disease in the Cardiovascular Health Study. Annals of Epidemiology, 5(4), 270–277.

Protocol ID

41201

Variables

Export Variables

Variable Name	Variable ID	Variable Description	dbGaP Mapping
PX041201_DVT
	PX041201040000	Deep vein thrombosis (DVT)	Variable Mapping
PX041201_DVT_DIAGNOSIS
	PX041201040200	Integer, encoded values	N/A
PX041201_DVT_Diagnosis_Based_On_Discharge_Summary
	PX041201040301	Diagnosis of deep vein thrombosis is based more on: 1 = Hospital discharge summary with a diagnosis of deep vein thrombosis show less	Variable Mapping
PX041201_DVT_Diagnosis_Based_On_Impedance_Plethysmography
	PX041201040303	Diagnosis of deep vein thrombosis is based more on: 3 = Positive findings using impedance plethysmography show less	Variable Mapping
PX041201_DVT_Diagnosis_Based_On_Isotope_Scan
	PX041201040305	Diagnosis of deep vein thrombosis is based more on: 5 = Positive findings on isotope scan show less	Variable Mapping
PX041201_DVT_Diagnosis_Based_On_Noninvasive
	PX041201040304	Diagnosis of deep vein thrombosis is based more on: 4 = Positive findings on doppler duplex, ultrasound, sonogram, or other non-invasive test examination show less	Variable Mapping
PX041201_DVT_Diagnosis_Based_On_Venogram
	PX041201040302	Diagnosis of deep vein thrombosis is based more on: 2 = Positive findings on a venogram show less	Variable Mapping
PX041201_DVT_Diagnosis_Date
	PX041201040100	Date of Diagnosis (mm/dd/yyyy).	N/A
PX041201_DVT_Diagnosis_Reporting_Source
	PX041201040400	Diagnosis of deep vein thrombosis reporting more source: (Mark one. If more than one category applies, mark the first applicable category.) show less	Variable Mapping
PX041201_Ever_Been_Treated
	PX041201020000	Have you ever been treated by a doctor or a more nurse with shots at home or as an outpatient (usually followed by blood thinning medications such as Coumadin, Warfarin) for blood clots in the legs called deep vein thrombosis or DVT? show less	N/A
PX041201_Ever_Have_Deep_Venous_Thrombosis
	PX041201010000	Has a doctor ever told you that you had deep more venous thrombosis or blood clots in your legs? show less	Variable Mapping
PX041201_Ever_Have_Outpatient_Test
	PX041201030000	Have you ever had outpatient test(s) more performed for blood clots in the legs called deep vein thrombosis or DVT? show less	N/A

Cardiovascular

Measure Name

Deep Venous Thrombosis

Release Date

September 24, 2009

Definition

Measure to assess history of deep venous thrombosis.

Purpose

To assess history of deep venous thrombosis and determine risk for pulmonary embolism.

Keywords

Deep venous thrombosis, deep vein thrombosis, DVT, blood clot, Coumadin, Warfarin, personal history, Cardiovascular

Measure Protocols

Protocol ID	Protocol Name
41201	Deep Venous Thrombosis

Publications

There are no publications listed for this protocol.

Mapping for PX041201_DVT

dbGAP Study	dbGAP Variable	dbGAP Variable Description
Atherosclerosis Risk in Communities (ARIC) Cohort	phv00202930	[General health]. Has a doctor ever said you had any of the following? Blood clot in a leg [deep vein thrombosis] [Annual Follow-up Questionnaire Form, AFUG]
Atherosclerosis Risk in Communities (ARIC) Cohort	phv00202931	[General health]. Has a doctor ever said you had any of the following? Blood clot in a lungs [pulmonary embolus] [Annual Follow-up Questionnaire Form, AFUG]
Atherosclerosis Risk in Communities (ARIC) Cohort	phv00206786	Section 3: Medical History. Respiratory. Pulmonary embolus [Heart Failure Hospital Record Abstraction Form, HFA]
Atherosclerosis Risk in Communities (ARIC) Cohort	phv00207698	Has a doctor ever told you that you had a blood clot in a leg (deep vein thrombosis)? This does not include varicose veins or phlebitis. Q9A [Medical History Questionnaire, exam 4]
Atherosclerosis Risk in Communities (ARIC) Cohort	phv00207699	Has a doctor ever told you that you had a blood clot in your lungs (pulmonary embolus)? Q10A [Medical History Questionnaire, exam 4]
CARDIA Cohort	phv00121342	DIAGNOSIS FOR DEEP VEIN THROMBOSIS
CARDIA Cohort	phv00121561	DIAGNOSIS FOR DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00099028	PULMONARY EMBOLUS/BLOOD CLOTS IN LUNGS
Cardiovascular Health Study (CHS) Cohort	phv00100325	DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00100326	PULMONARY EMBOLUS/BLOOD CLOTS IN LUNGS
Cardiovascular Health Study (CHS) Cohort	phv00105971	PULMONARY EMBOLUS/BLOOD CLOTS IN LUNGS
Framingham Cohort	phv00007028	VENOUS DISEASE: DEEP VEIN THROMBOSIS (BLOOD CLOTS IN LEGS OR ARMS) - LEFT
Framingham Cohort	phv00007029	VENOUS DISEASE: DEEP VEIN THROMBOSIS (BLOOD CLOTS IN LEGS OR ARMS) - RIGHT
Framingham Cohort	phv00007461	VENOUS DISEASE: DEEP VEIN THROMBOSIS (BLOOD CLOTS IN LEGS OR ARMS)
Framingham Cohort	phv00010342	VENOUS DISEASE: DEEP VEIN THROMBOSIS (BLOOD CLOTS IN LEGS OR ARMS) - LEFT
Framingham Cohort	phv00010343	VENOUS DISEASE: DEEP VEIN THROMBOSIS (BLOOD CLOTS IN LEGS OR ARMS) - RIGHT
Framingham Cohort	phv00010478	CDI: DEEP VEIN THROMBOSIS
Framingham Cohort	phv00021065	HAVE YOU EVER HAD A DEEP VEIN THROMBOSIS (BLOOD IN LEG OR ARMS)
Framingham Cohort	phv00021066	HAVE YOU EVER HAD A PULMONARY EMBOLUS (BLOOD CLOT IN LUNGS)
Genetic Epidemiology of COPD (COPDGene)	phv00159616	Blood clots [in legs or lungs]
Jackson Heart Study (JHS) Cohort	phv00124997	7e. Blood clot in a leg or deep vein thrombosis
Jackson Heart Study (JHS) Cohort	phv00124998	7f. Blood clot in your lungs or pulmonary embolus
Jackson Heart Study (JHS) Cohort	phv00125082	7e. Blood clot in a leg or deep vein thrombosis
Jackson Heart Study (JHS) Cohort	phv00125083	7f. Blood clot in your lungs or pulmonary embolus
Jackson Heart Study (JHS) Cohort	phv00125167	7e. Blood clot in a leg or deep vein thrombosis
Jackson Heart Study (JHS) Cohort	phv00125168	7f. Blood clot in your lungs or pulmonary embolus
Jackson Heart Study (JHS) Cohort	phv00125253	7e. Blood clot in a leg or deep vein thrombosis
Jackson Heart Study (JHS) Cohort	phv00125254	7f. Blood clot in your lungs or pulmonary embolus
Jackson Heart Study (JHS) Cohort	phv00125367	16. Has a doctor ever said that you had a blood clot in a leg or deep vein thrombosis?
Jackson Heart Study (JHS) Cohort	phv00125371	17a. Has a doctor ever said that you had a blood clot in your lungs or a pulmonary embolus?
Multi-Ethnic Study of Atherosclerosis (MESA) Cohort	phv00082986	BLOOD CLOTS IN LEGS/LUNGS: SELF-REPORT
Multi-Ethnic Study of Atherosclerosis (MESA) Cohort	phv00085222	BLOOD CLOTS IN LEGS/LUNGS: SELF-REPORT
Multi-Ethnic Study of Atherosclerosis (MESA) Cohort	phv00087130	BLOOD CLOTS IN LUNG OR LEG VEINS
NIA Long Life Family Study (LLFS)	phv00163272	Deep Vein Thrombosis or Pulmonary Embolism diagnosed?
Women's Health Initiative	phv00078475	Pulmonary embolism ever
Women's Health Initiative	phv00079310	F40 Family member ever have a pulmonary embolus (PE)
Women's Health Initiative	phv00080148	Deep Vein Thrombosis
Women's Health Initiative	phv00080150	Deep vein thrombosis source of outcome review (central vs. local)
Women's Health Initiative	phv00080151	Pulmonary Embolism
Women's Health Initiative	phv00080296	Deep Vein Thrombosis
Women's Health Initiative	phv00080298	Deep vein thrombosis source of outcome review (central vs. local)
Women's Health Initiative	phv00080299	Pulmonary Embolism
Women's Health Initiative	phv00080308	F33 Deep Vein Thrombosis
Women's Health Initiative	phv00080310	F33 Pulmonary embolism
Women's Health Initiative	phv00080366	F33 Deep Vein Thrombosis
Women's Health Initiative	phv00080368	F33 Pulmonary embolism
Women's Health Initiative	phv00111081	Deep Vein Thrombosis (DVT)
Women's Health Initiative	phv00111082	Pulmonary Embolism (PE)
Women's Health Initiative	phv00111083	F126 DVT diagnosis
Women's Health Initiative	phv00111084	F126 DVT based on hospital discharge summary
Women's Health Initiative	phv00111085	F126 DVT based on positive findings on venogram
Women's Health Initiative	phv00111086	DVT positive findings impedance plethysmography
Women's Health Initiative	phv00111087	F126 DVT positive findings on doppler
Women's Health Initiative	phv00111088	F126 DVT positive findings on isotope
Women's Health Initiative	phv00111089	F126 diagnosis DVT report source
Women's Health Initiative	phv00111099	Deep Vein Thrombosis (DVT)
Women's Health Initiative	phv00111100	Pulmonary Embolism (PE)
Women's Health Initiative	phv00111101	F126 DVT diagnosis
Women's Health Initiative	phv00111102	F126 DVT based on hospital discharge summary
Women's Health Initiative	phv00111103	F126 DVT based on positive findings on venogram
Women's Health Initiative	phv00111104	DVT positive findings impedance plethysmography
Women's Health Initiative	phv00111105	F126 DVT positive findings on doppler
Women's Health Initiative	phv00111106	F126 DVT positive findings on isotope
Women's Health Initiative	phv00111108	F126 PE work up done
Women's Health Initiative	phv00155660	Deep Vein Thrombosis (DVT)
Women's Health Initiative	phv00155672	Pulmonary Embolism (PE)
Women's Health Initiative	phv00155953	Deep Vein Thrombosis (DVT)
Women's Health Initiative	phv00155965	Pulmonary Embolism (PE)
Women's Health Initiative	phv00156210	F33 Deep Vein Thrombosis
Women's Health Initiative	phv00156212	F33 Pulmonary Embolism
Women's Health Initiative	phv00156298	F33 Deep Vein Thrombosis
Women's Health Initiative	phv00156300	F33 Pulmonary Embolism
Women's Health Initiative	phv00169693	Deep Vein Thrombosis (DVT)
Women's Health Initiative	phv00169705	Pulmonary Embolism (PE)
Women's Health Initiative	phv00170196	Deep Vein Thrombosis (DVT)
Women's Health Initiative	phv00170208	Pulmonary Embolism (PE)
Women's Health Initiative	phv00170492	Deep Vein Thrombosis (DVT)
Women's Health Initiative	phv00170493	Pulmonary Embolism (PE)
Women's Health Initiative	phv00170494	F126 DVT diagnosis
Women's Health Initiative	phv00170495	F126 DVT based on hospital discharge summary
Women's Health Initiative	phv00170496	F126 DVT based on positive findings on venogram
Women's Health Initiative	phv00170497	DVT positive findings impedance plethysmography
Women's Health Initiative	phv00170498	F126 DVT positive findings on doppler
Women's Health Initiative	phv00170499	F126 DVT positive findings on isotope
Women's Health Initiative	phv00170567	F33 Deep Vein Thrombosis
Women's Health Initiative	phv00170569	F33 Pulmonary Embolism
Women's Health Initiative	phv00170649	F33 Deep Vein Thrombosis
Women's Health Initiative	phv00170651	F33 Pulmonary Embolism
Women's Health Initiative	phv00193554	DVT
Women's Health Initiative	phv00193555	PE
Women's Health Initiative	phv00193556	F126 DVT diagnosis
Women's Health Initiative	phv00193557	F126 DVT based on hospital discharge summary
Women's Health Initiative	phv00193558	F126 DVT based on positive findings on venogram
Women's Health Initiative	phv00193559	DVT positive findings impedance plethysmography
Women's Health Initiative	phv00193560	F126 DVT positive findings on doppler
Women's Health Initiative	phv00193561	F126 DVT positive findings on isotope
Women's Health Initiative	phv00193562	F126 diagnosis DVT report source
Women's Health Initiative	phv00193689	F33 Outpatient Deep Vein Thrombosis
Women's Health Initiative	phv00193691	F33 Hospitalized Pulmonary Embolism
Women's Health Initiative	phv00193693	F33 Outpatient Pulmonary Embolism
Women's Health Initiative	phv00202394	F33 Deep Vein Thrombosis

Mapping for PX041201_DVT_Diagnosis_Based_On_Discharge_Summary

dbGAP Study	dbGAP Variable	dbGAP Variable Description
CARDIA Cohort	phv00121343	DVT BASED ON DISCHARGE SUMMARY WITH DIAGNOSIS
CARDIA Cohort	phv00121562	DVT BASED ON DISCHARGE SUMMARY WITH DIAGNOSIS
Women's Health Initiative	phv00111084	F126 DVT based on hospital discharge summary
Women's Health Initiative	phv00111102	F126 DVT based on hospital discharge summary
Women's Health Initiative	phv00170495	F126 DVT based on hospital discharge summary
Women's Health Initiative	phv00193557	F126 DVT based on hospital discharge summary

Mapping for PX041201_DVT_Diagnosis_Based_On_Impedance_Plethysmography

dbGAP Study	dbGAP Variable	dbGAP Variable Description
CARDIA Cohort	phv00121345	DVT BASED ON POS FIND - IMPEDANCE PLETHYSMOGRAPHY
CARDIA Cohort	phv00121564	DVT BASED ON POS FIND - IMPEDANCE PLETHYSMOGRAPHY
Women's Health Initiative	phv00111086	DVT positive findings impedance plethysmography
Women's Health Initiative	phv00111104	DVT positive findings impedance plethysmography
Women's Health Initiative	phv00170497	DVT positive findings impedance plethysmography
Women's Health Initiative	phv00193559	DVT positive findings impedance plethysmography

Mapping for PX041201_DVT_Diagnosis_Based_On_Isotope_Scan

dbGAP Study	dbGAP Variable	dbGAP Variable Description
CARDIA Cohort	phv00121347	DVT BASED ON POS ISOTOPE SCAN
CARDIA Cohort	phv00121566	DVT BASED ON POS ISOTOPE SCAN
Women's Health Initiative	phv00111088	F126 DVT positive findings on isotope
Women's Health Initiative	phv00111106	F126 DVT positive findings on isotope
Women's Health Initiative	phv00170499	F126 DVT positive findings on isotope
Women's Health Initiative	phv00193561	F126 DVT positive findings on isotope

Mapping for PX041201_DVT_Diagnosis_Based_On_Noninvasive

dbGAP Study	dbGAP Variable	dbGAP Variable Description
CARDIA Cohort	phv00121346	DVT BASED ON POS DOPPLER, ULTRASOUND, SONOGRAM
CARDIA Cohort	phv00121565	DVT BASED ON POS DOPPLER, ULTRASOUND, SONOGRAM
Women's Health Initiative	phv00111087	F126 DVT positive findings on doppler
Women's Health Initiative	phv00111105	F126 DVT positive findings on doppler
Women's Health Initiative	phv00170498	F126 DVT positive findings on doppler
Women's Health Initiative	phv00193560	F126 DVT positive findings on doppler

Mapping for PX041201_DVT_Diagnosis_Based_On_Venogram

dbGAP Study	dbGAP Variable	dbGAP Variable Description
CARDIA Cohort	phv00121344	DVT BASED ON POS VENOGRAM
CARDIA Cohort	phv00121563	DVT BASED ON POS VENOGRAM
Women's Health Initiative	phv00111085	F126 DVT based on positive findings on venogram
Women's Health Initiative	phv00111103	F126 DVT based on positive findings on venogram
Women's Health Initiative	phv00170496	F126 DVT based on positive findings on venogram
Women's Health Initiative	phv00193558	F126 DVT based on positive findings on venogram

Mapping for PX041201_DVT_Diagnosis_Reporting_Source

dbGAP Study	dbGAP Variable	dbGAP Variable Description
Women's Health Initiative	phv00111080	Ascertainment Source
Women's Health Initiative	phv00111089	F126 diagnosis DVT report source
Women's Health Initiative	phv00111098	Ascertainment Source
Women's Health Initiative	phv00111107	F126 diagnosis DVT report source
Women's Health Initiative	phv00155662	DVT ascertainment source
Women's Health Initiative	phv00155955	DVT ascertainment source
Women's Health Initiative	phv00169695	DVT ascertainment source
Women's Health Initiative	phv00170198	DVT ascertainment source
Women's Health Initiative	phv00170491	Ascertainment Source
Women's Health Initiative	phv00170500	F126 diagnosis DVT report source
Women's Health Initiative	phv00192503	DVT ascertainment source
Women's Health Initiative	phv00193180	DVT ascertainment source
Women's Health Initiative	phv00193553	Ascertainment Source
Women's Health Initiative	phv00193562	F126 diagnosis DVT report source

Mapping for PX041201_Ever_Have_Deep_Venous_Thrombosis

dbGAP Study	dbGAP Variable	dbGAP Variable Description
Atherosclerosis Risk in Communities (ARIC) Cohort	phv00207698	Has a doctor ever told you that you had a blood clot in a leg (deep vein thrombosis)? This does not include varicose veins or phlebitis. Q9A [Medical History Questionnaire, exam 4]
Atherosclerosis Risk in Communities (ARIC) Cohort	phv00203035	[General health]. Since we last contacted you has a doctor said that you had a blood clot in a leg or deep vein thrombosis? [Annual Follow-up Questionnaire Form, AFUM]
Atherosclerosis Risk in Communities (ARIC) Cohort	phv00202930	[General health]. Has a doctor ever said you had any of the following? Blood clot in a leg [deep vein thrombosis] [Annual Follow-up Questionnaire Form, AFUG]
CARDIA Cohort	phv00121561	DIAGNOSIS FOR DEEP VEIN THROMBOSIS
CARDIA Cohort	phv00121342	DIAGNOSIS FOR DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00103481	TOLD BY MD YOU HAD DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00110053	HAD DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00103534	TOLD BY MD YOU HAD DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00103586	TOLD BY MD YOU HAD DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00103639	TOLD BY MD YOU HAD DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00103691	TOLD BY MD YOU HAD DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00103742	TOLD BY MD YOU HAD DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00104048	DEEP VENOUS THROMBOSIS/BLOOD CLOT IN LEG
Cardiovascular Health Study (CHS) Cohort	phv00105969	HAD DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00107043	HAD DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00107950	HAD DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00108624	HAD DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00109391	HAD DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00103376	TOLD BY MD YOU HAD DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00103324	TOLD BY MD YOU HAD DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00103271	TOLD BY MD YOU HAD DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00103219	TOLD BY MD YOU HAD DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00103166	TOLD BY MD YOU HAD DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00102680	HAD DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00101532	HAD DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00100325	DEEP VEIN THROMBOSIS
Cardiovascular Health Study (CHS) Cohort	phv00099027	DEEP VENOUS THROMBOSIS/BLOOD CLOT IN LEG
Cardiovascular Health Study (CHS) Cohort	phv00103429	TOLD BY MD YOU HAD DEEP VEIN THROMBOSIS
Framingham Cohort	phv00010478	CDI: DEEP VEIN THROMBOSIS
Framingham Cohort	phv00021065	HAVE YOU EVER HAD A DEEP VEIN THROMBOSIS (BLOOD IN LEG OR ARMS)
Framingham Cohort	phv00007461	VENOUS DISEASE: DEEP VEIN THROMBOSIS (BLOOD CLOTS IN LEGS OR ARMS)
Jackson Heart Study (JHS) Cohort	phv00124997	7e. Blood clot in a leg or deep vein thrombosis
Jackson Heart Study (JHS) Cohort	phv00125082	7e. Blood clot in a leg or deep vein thrombosis
Jackson Heart Study (JHS) Cohort	phv00125167	7e. Blood clot in a leg or deep vein thrombosis
Jackson Heart Study (JHS) Cohort	phv00125253	7e. Blood clot in a leg or deep vein thrombosis
Jackson Heart Study (JHS) Cohort	phv00125367	16. Has a doctor ever said that you had a blood clot in a leg or deep vein thrombosis?
Jackson Heart Study (JHS) Cohort	phv00125513	DOCTOR - BLOOD CLOT IN LEG Q7E
Jackson Heart Study (JHS) Cohort	phv00125601	DOCTOR - BLOOD CLOT IN LEG Q7E
Jackson Heart Study (JHS) Cohort	phv00125689	DOCTOR - BLOOD CLOT IN LEG Q7E
Jackson Heart Study (JHS) Cohort	phv00125777	DOCTOR - BLOOD CLOT IN LEG Q7E
NIA Long Life Family Study (LLFS)	phv00163272	Deep Vein Thrombosis or Pulmonary Embolism diagnosed?
Women's Health Initiative	phv00170567	F33 Deep Vein Thrombosis
Women's Health Initiative	phv00155953	Deep Vein Thrombosis (DVT)
Women's Health Initiative	phv00170649	F33 Deep Vein Thrombosis
Women's Health Initiative	phv00192501	DVT
Women's Health Initiative	phv00193178	DVT
Women's Health Initiative	phv00193554	DVT
Women's Health Initiative	phv00202394	F33 Deep Vein Thrombosis
Women's Health Initiative	phv00078472	DVT ever
Women's Health Initiative	phv00080308	F33 Deep Vein Thrombosis
Women's Health Initiative	phv00080366	F33 Deep Vein Thrombosis
Women's Health Initiative	phv00170492	Deep Vein Thrombosis (DVT)
Women's Health Initiative	phv00170196	Deep Vein Thrombosis (DVT)
Women's Health Initiative	phv00169693	Deep Vein Thrombosis (DVT)
Women's Health Initiative	phv00156298	F33 Deep Vein Thrombosis
Women's Health Initiative	phv00156210	F33 Deep Vein Thrombosis
Women's Health Initiative	phv00155660	Deep Vein Thrombosis (DVT)
Women's Health Initiative	phv00080148	Deep Vein Thrombosis
Women's Health Initiative	phv00080296	Deep Vein Thrombosis
Women's Health Initiative	phv00111099	Deep Vein Thrombosis (DVT)
Women's Health Initiative	phv00111081	Deep Vein Thrombosis (DVT)

Protocol - Deep Venous Thrombosis

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