Trial Information

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