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

March 7, 2012 updated by: National Institutes of Health Clinical Center (CC)

Assessment of Occupational EMF Exposure - Validation of Interview Procedures Used in Brain Tumor Study

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.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

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.

Study Type

Observational

Enrollment (Anticipated)

108

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • California
      • Menlo Park, California, United States, 94025
        • Exponent, Inc.
    • Ohio
      • Cincinnati, Ohio, United States, 45226
        • National Institute for Occupational Safety and Health

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

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

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

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?

What is the study measuring?

Primary Outcome Measures

Outcome Measure
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

Collaborators and Investigators

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

Sponsor

National Institutes of Health Clinical Center (CC)

Collaborators

National Cancer Institute (NCI)

Investigators

  • Study Chair: Joseph Coble, DSc, National Cancer Institute (NCI)

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.

General Publications

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

October 1, 2005

Study Completion (Actual)

March 1, 2007

Study Registration Dates

First Submitted

June 19, 2006

First Submitted That Met QC Criteria

June 19, 2006

First Posted (Estimate)

June 21, 2006

Study Record Updates

Last Update Posted (Estimate)

March 8, 2012

Last Update Submitted That Met QC Criteria

March 7, 2012

Last Verified

March 1, 2012

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 99906013
  • 06-C-N013
  • 999906013
  • CDR0000551595

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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