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Saturday, February 12 • 3:00pm - 8:00pm
Threshold shift trends in occupational hearing conservation programs: 1970 to 2019

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The last 50 years have witnessed regulatory, technological, and demographic changes that impact occupational hearing conservation programs (HCPs) in the U.S. This presentation describes trends in threshold shifts observed in a database of over 600,000 exams (> 140,000 workers) between 1970 and 2020. Unadjusted rates of standard threshold shifts (STS) declined from over 50% of tested workers through the 1980s to 13% from 2010-2019. Recently, the median time from baseline to initial STS trigger was around 2 years; 25% of initial STS trigger events occurred in year 1. Given the short time between baseline and initial STS triggers, enhanced efforts to identify problems in the first few years in the hearing conservation program (e.g., insufficient education and training; inadequate hearing protector selection, fitting, or use; inadequate engineering controls) could lead to additional reductions in rates of threshold shifts among noise exposed workers.

Speakers
avatar for Gregory Flamme, Ph.D.

Gregory Flamme, Ph.D.

Senior Scientist, SASRAC
Dr. Gregory Flamme is the Senior Scientist and Chief Operating Officer of Stephenson and Stephenson Research and Consulting (SASRAC), which is a company founded by Dr. Mark Stephenson and Dr. Carol Stephenson. Dr. Flamme has a Ph.D. in Audiology from the University of Memphis, completed... Read More →
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Deanna Meinke, Ph.D.

Professor, University of Northern Colorado
Deanna Meinke received her undergraduate degree in communication disorders from Colorado State University and a master’s degree in Audiology from Northern Illinois University. She holds a Ph.D. from the University of Colorado in Audiology and is currently a Winchester Distinguished... Read More →
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Mark Stephenson, Ph.D.

Dr. Mark Stephenson is the owner and principal consultant for Stephenson and Stephenson Research and Consulting (SASRAC). He received his Ph.D. in audiology and hearing science from The Ohio State University in 1986. Mark was a Lt. Colonel in the U.S. Air Force, where he served until... Read More →
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Stephen Tasko, Ph.D.

Dr. Stephen Tasko is an Associate Professor Emeritus in the Department of Speech, Language and Hearing Sciences at Western Michigan University and Research Consultant with Stephenson and Stephenson Research and Consulting (SASRAC). Dr. Tasko earned his Ph.D. in Communication Disorders... Read More →


Saturday February 12, 2022 3:00pm - 8:00pm CST
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Attendees (4)