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Developing Interview Questions to Estimate Workplace Exposure to Electric and Magnetic Fields

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00340054
First Posted: June 21, 2006
Last Update Posted: March 8, 2012
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.
Collaborator:
National Cancer Institute (NCI)
Information provided by:
National Institutes of Health Clinical Center (CC)
  Purpose

RATIONALE: Electric and magnetic fields may increase the risk of cancer. Developing interview questions that accurately estimate a person's exposure to electric and magnetic fields may help doctors learn about the long-term effects of workplace exposure.

PURPOSE: This clinical trial is developing interview questions that can be used in estimating workplace exposure to electric and magnetic fields.


Condition Intervention
Brain and Central Nervous System Tumors Other: questionnaire administration Procedure: study of high risk factors

Study Type: Observational
Official Title: Assessment of Occupational EMF Exposure - Validation of Interview Procedures Used in Brain Tumor Study

Further study details as provided by National Institutes of Health Clinical Center (CC):

Primary Outcome Measures:
  • Validation of an interview-based electric and magnetic field (EMF) exposure assessment algorithm
  • Calibration of algorithm parameters
  • Correlation between EMF exposure estimates from the algorithm with biologically based metrics measured by new instrumentation

Estimated Enrollment: 108
Study Start Date: October 2005
Study Completion Date: March 2007
Detailed Description:

OBJECTIVES:

  • Validate an interview-based electric and magnetic field exposure (EMF) assessment algorithm against measurements of the time-weighted average magnetic field magnitude used in previous epidemiologic studies.
  • Calibrate the parameters in the algorithm in order to improve the exposure estimates.
  • Correlate EMF exposure estimates from the algorithm with biologically based metrics measured by new instrumentation.

OUTLINE: Participants respond to questions during a 5- to 15-minute telephone interview concerning workplace exposure to electric and magnetic (EMF) fields. Data is collected during the interview using an exposure assessment algorithm designed to estimate EMF workplace exposure based on participants' responses. The interview-based estimates are then validated against actual field measurements of magnetic field exposure captured by Emdex multiwave monitors located at participating sites.

  Eligibility

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Ages Eligible for Study:   18 Years to 65 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

DISEASE CHARACTERISTICS:

  • Meets 1 of the following occupation criteria:

    • Three occupations that primarily work in offices at Lawrence Livermore National Laboratories (LLNL)
    • Three occupations that do nonelectric manual work (e.g., machinists and laborers) at LLNL

PATIENT CHARACTERISTICS:

  • Not specified

PRIOR CONCURRENT THERAPY:

  • Not specified
  Contacts and Locations
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 ClinicalTrials.gov identifier (NCT number): NCT00340054


Locations
United States, California
Exponent, Inc.
Menlo Park, California, United States, 94025
United States, Ohio
National Institute for Occupational Safety and Health
Cincinnati, Ohio, United States, 45226
Sponsors and Collaborators
National Institutes of Health Clinical Center (CC)
National Cancer Institute (NCI)
Investigators
Study Chair: Joseph Coble, DSc National Cancer Institute (NCI)
  More Information

Publications:
ClinicalTrials.gov Identifier: NCT00340054     History of Changes
Obsolete Identifiers: NCT00481910
Other Study ID Numbers: 99906013
06-C-N013
999906013
CDR0000551595
First Submitted: June 19, 2006
First Posted: June 21, 2006
Last Update Posted: March 8, 2012
Last Verified: March 2012

Keywords provided by National Institutes of Health Clinical Center (CC):
brain tumor

Additional relevant MeSH terms:
Nervous System Neoplasms
Central Nervous System Neoplasms
Neoplasms by Site
Neoplasms
Nervous System Diseases