A Postmarketing Study of the Risk of Venous Thromboembolism (Blood Clots), Myocardial Infarction (Heart Attacks), and Stroke Among Women Using ORTHO EVRA (Norelgestromin and Ethinyl Estradiol Contraceptive Patch) Compared With Women Who Take Oral Contraceptives for Birth Control

The Risk of Venous Thromboembolism, Myocardial Infarction, and Ischemic Stroke Among Women Using the Transdermal Contraceptive System Compared With Women Using Norgestimate-containing Oral Contraceptives With 35 mcg Ethinyl Estradiol

The purpose of the study is to use data from a health care information database to assess the risk of venous thromboembolism (blood clots), myocardial infarction (heart attacks), and stroke among women using a transdermal contraceptive system (ORTHO EVRA) for birth control compared with women using norgestimate-containing oral contraceptives with 35 mcg ethinyl estradiol.

Study Overview

Detailed Description

ORTHO EVRA (norelgestromin and ethinyl estradiol) is a once-a-week transdermal contraceptive (birth control) system where a small square-shaped patch is worn on the body and hormones from the patch are absorbed transdermally (through the skin) to help prevent pregnancy. This is an observational case-control study that will use data provided by a United States health care claims database and the National Death Index (NDI) to assess the risk of venous thromboembolism abbreviated as VTE (includes deep vein thrombosis abbreviated as DVT [a blood clot that forms in one or more of the deep veins of the body, usually the legs] and pulmonary embolism abbreviated as PE [a blood clot in the lungs]), acute myocardial infarction abbreviated as AMI (heart attack), and ischemic stroke (blockage of an artery that supplies blood to the brain) among women using the transdermal contraceptive system, ORTHO EVRA compared with women using norgestimate-containing oral contraceptives (NGM-OCs) with 35 mcg ethinyl estradiol (EE), during the period 01 April 2002 to 31 December 2004 and during an extension period from 01 January 2005 to 31 December 2006. In the extension period of the study (01 January 2005 to 31 December 2006), mortality was added as an endpoint in the study. After obtaining Institutional Review Board (IRB) approval and a waiver of authorization, requests will be made for medical records for all women who have been dispensed at least once with ORTHO EVRA or a NGM-OC and whose health insurance claims are consistent with the occurrence of VTE, AMI, or stroke. The primary outcome measure in the study is AMI and ischemic stroke combined in current and recent users or ORTHO EVRA compared to current and recent users of NGM-OCs with 34 mcg of EE. Observational study - No investigational drug administered. NOTE: The study was conducted in two parts. Study CR014383, NCT00511784, represents the first portion of the study. This study, CR012022, represents the second portion of the extended study.

Study Type

Observational

Enrollment (Actual)

423

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

11 years to 40 years (Child, Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Sampling Method

Non-Probability Sample

Study Population

Women using a transdermal contraceptive system or NGM-OCs containing 35 mcg EE between April 1, 2002 and December 31, 2006 whose medical records are accessable through research databases in the United States.

Description

Inclusion Criteria:

  • Users of a transdermal contraceptive system or norgestimate-containing oral contraceptives with 35 mcg ethinyl estradiol between April 1, 2002 and December 31, 2006, who are identified in the Ingenix Research Database
  • Have complete medical coverage and pharmacy benefits

Exclusion Criteria:

  • Have a claim associated with physician services for any of the following: malignancy other than non-melanoma skin cancer
  • coagulation defects, history of venous thrombus/embolism, or long-term anticoagulant use
  • Chronic inflammatory disease

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Case-Control
  • Time Perspectives: Retrospective

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
001
Transdermal Contraceptive System In each 4-week period exposed subjects will wear a transdermal patch containing 6 mg norelgestromin and 0.75 mg EE worn for each of 3 consecutive weeks with no patch the 4th week.
In each 4-week period, exposed subjects will wear a transdermal patch containing 6 mg norelgestromin and 0.75 mg EE worn for each of 3 consecutive weeks with no patch the 4th week.
002
Norgestimate-containing oral contraceptives with EE NGM-OCs with 34 mcg of EE taken during each 4 week period for 21 consecutive days then no pill or a drug-free pill 7 days.
NGM-OCs with 34 mcg of EE taken during each 4 week period for 21 consecutive days, then no pill or a drug-free pill 7 days.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
AMI and ischemic stroke combined in current and recent users or ORTHO EVRA compared to current and recent users of NGM-OCs with 34 mcg of EE.
Time Frame: From 01 April 2002 to 31 December 2004 combined with data from the extension period from 01 January 2005 to 31 December 2006.
From 01 April 2002 to 31 December 2004 combined with data from the extension period from 01 January 2005 to 31 December 2006.

Secondary Outcome Measures

Outcome Measure
Time Frame
AMI in current and recent users or ORTHO EVRA compared to current and recent users of NGM-OCs with 34 mcg of EE.
Time Frame: From 01 April 2002 to 31 December 2006.
From 01 April 2002 to 31 December 2006.
Ischemic stroke in current and recent users or ORTHO EVRA compared to current and recent users of NGM-OCs with 34 mcg of EE.
Time Frame: From 01 April 2002 to 31 December 2006.
From 01 April 2002 to 31 December 2006.
VTE (a combined outcome of PE and DVT) in current and recent users or ORTHO EVRA compared to current and recent users of NGM-OCs with 34 mcg of EE.
Time Frame: From 01 April 2002 to 31 December 2006.
From 01 April 2002 to 31 December 2006.
AMI or ischemic stroke or VTE combined in current and recent users or ORTHO EVRA compared to current and recent users of NGM-OCs with 34 mcg of EE.
Time Frame: From 01 April 2002 to 31 December 2006.
From 01 April 2002 to 31 December 2006.
All deaths (identified by the NDI), NDI-identified deaths due to AMI, ischemic stroke or VTE, and NDI-identified deaths due to sudden or unknown causes
Time Frame: From 01 April 2002 to 31 December 2006.
From 01 April 2002 to 31 December 2006.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

April 1, 2002

Primary Completion (Actual)

October 1, 2008

Study Completion (Actual)

October 1, 2008

Study Registration Dates

First Submitted

September 15, 2006

First Submitted That Met QC Criteria

September 18, 2006

First Posted (Estimate)

September 19, 2006

Study Record Updates

Last Update Posted (Estimate)

July 19, 2016

Last Update Submitted That Met QC Criteria

July 15, 2016

Last Verified

July 1, 2016

More Information

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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