Spots Global Cancer Trial Database for Developing Interview Questions to Estimate Workplace Exposure to Electric and Magnetic Fields

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Trial Identification

Brief Title: Developing Interview Questions to Estimate Workplace Exposure to Electric and Magnetic Fields

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

Study ID: NCT00340054

Conditions

Brain and Central Nervous System Tumors

Interventions

questionnaire administration

study of high risk factors

Study Description

Brief 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.

Detailed 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.