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Completed

NCT Number: NCT00340054

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

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.

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Key information

Conditions

Brain and Central Nervous System Tumors Brain Diseases Brain Neoplasms Central Nervous System Diseases Central Nervous System Neoplasms Neoplasms Neoplasms by Site Nervous System Diseases Nervous System Neoplasms

Age range

18 year–65 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Exponent, Inc., Menlo Park, California, United States

Loading trial locations.

About this study

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.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Questionnaire Administration

Other

study of high risk factors

Procedure

Primary outcomes

  1. Validation of an interview-based electric and magnetic field (EMF) exposure assessment algorithm

  2. Calibration of algorithm parameters

  3. Correlation between EMF exposure estimates from the algorithm with biologically based metrics measured by new instrumentation

Sponsors and collaborators

Lead sponsor

National Institutes of Health Clinical Center (CC)

Nih

Collaborators

  • National Cancer Institute (NCI)

Registry information

Official study title

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

Important dates

Study start
2005
Study completion
2007
First posted
Jun 21, 2006
Registry last updated
Mar 8, 2012

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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