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

Brain and Central Nervous System Tumors Clinical Trial

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

Status Completed

Clinical Trial Summary

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.

Clinical Trial 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 Design

N/A

Related Conditions & MeSH terms

• Brain and Central Nervous System Tumors
• Central Nervous System Neoplasms
• Nervous System Neoplasms

• NCT number: NCT00340054
• Study type: Observational
• Source: National Institutes of Health Clinical Center (CC)
• Status: Completed
• Phase: N/A
• Start date: October 2005
• Completion date: March 2007