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

Completed

• Conditions: Brain and Central Nervous System Tumors

• Registration Number: NCT00340054
• Lead Sponsor: National Institutes of Health Clinical Center (CC)

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.

Study Timeline

• Study Start: 2005-10
• Study First Submitted: 2006-06-19
• Study First Submitted QC: 2006-06-19
• Study First Posted: 2006-06-21
• Study Completion: 2007-03
• Status Verified: 2012-03
• Last Update Submitted: 2012-03-07
• Last Update Posted: 2012-03-08

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 108

Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
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

Trial Locations

Locations (2)

National Institute for Occupational Safety and Health; 🇺🇸 Cincinnati, Ohio, United States

Exponent, Inc.; 🇺🇸 Menlo Park, California, United States