Clinical trial · Observational
Developing Interview Questions to Estimate Workplace Exposure to Electric and Magnetic Fields
Assessment of Occupational EMF Exposure - Validation of Interview Procedures Used in Brain Tumor Study
NCT00340054CI-TRIAL-00006410completedClinicalTrials.gov clinicaltrialsProvenance
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
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.
Conditions
Conditions (1)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Brain and Central Nervous System Tumors | — | UNRESOLVED | — |
Interventions
Interventions (2)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| questionnaire administration | Other | — | UNRESOLVED |
| study of high risk factors | Procedure | — | UNRESOLVED |
Design
Arms and outcomes
Arms (0)
[]Primary outcomes (3)
- measure
- Validation of an interview-based electric and magnetic field (EMF) exposure assessment algorithm
- measure
- Calibration of algorithm parameters
- measure
- Correlation between EMF exposure estimates from the algorithm with biologically based metrics measured by new instrumentation
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 18 Years
- Maximum age
- 65 Years
Show eligibility criteria text
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
References
Publications (1)
- BACKGROUNDKelsh MA, Kheifets L, Smith R. The impact of work environment, utility, and sampling design on occupational magnetic field exposure summaries. AIHAJ. 2000 Mar-Apr;61(2):174-82. doi: 10.1080/15298660008984526. PMID 10782189