Developing Interview Questions to Estimate Workplace Exposure to Electric and Magnetic Fields
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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 |
- 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 |
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| Ages Eligible for Study: | 18 Years to 65 Years |
| Genders Eligible for Study: | Both |
| Accepts Healthy Volunteers: | No |
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| 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 | |
| Study Chair: | Joseph Coble, DSc | National Cancer Institute (NCI) |
More Information
Additional Information:
Publications:
| ClinicalTrials.gov Identifier: | NCT00340054 History of Changes |
| Obsolete Identifiers: | NCT00481910 |
| Other Study ID Numbers: | 99906013, 06-C-N013, 999906013, CDR0000551595 |
| Study First Received: | June 19, 2006 |
| Last Updated: | March 7, 2012 |
| Health Authority: | United States: Federal Government |
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 |
ClinicalTrials.gov processed this record on May 22, 2013