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Evaluation of Additional Criteria for Significant Threshold Shift in Occupational Hearing Conservation Programs.

PB97104392

Publication Date	1996
Personal Author	Royster, J. D.
Page Count	32
Abstract	As a supplement to a study of significant threshold shift (STS) criteria completed in 1992, two additional shift criteria were analyzed. Analyses were restricted to the first eight audiograms for male employees with at least eight tests. This involved a total of 2,903 employees across all fifteen datasets. The two STS criteria examined were called OSHA STS TWICE, and 15 decibles (dB) TWICE at 1 to 4 kilohertz (kHz). The first monitored a change of 10dB or more in the average of hearing thresholds at 2,000, 3,000, and 4,000 hertz (Hz) and persistence on the next audiogram. The second involved a change of 15dB or more at any test frequency from 1,000 through 4,000Hz and persistence on the next audiogram. The two criteria produced smaller percentages of employees tagged per year than any of the previously evaluated criteria. The 15dB TWICE criteria yield the overall highest percentages of true positive tags. The OSHA STS TWICE criterion achieved a higher percentage after positive tags in the control databases only, but its percent true positive tags in the noncontrol database was lower than for either of the 15dB TWICE criteria.
Keywords	Occupational safety and health Noise pollution Auditory defects Noise-induced hearing loss Hearing Criteria Standards Occupational exposure Comparison Graphs(Charts) Thresholds(Perception) Working conditions
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	68B - Noise Pollution & Control 57U - Public Health & Industrial Medicine 57W - Stress Physiology
Corporate Authors	Environmental Noise Consultants, Inc., Raleigh, NC.; National Inst. for Occupational Safety and Health, Cincinnati, OH.
Supplemental Notes	See also PB93-159143. Sponsored by National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
Title Note	Final rept.
NTIS Issue Number	199701

Evaluation of Additional Criteria for Significant Threshold Shift in Occupational Hearing Conservation Programs.

Evaluation of Additional Criteria for Significant Threshold Shift in Occupational Hearing Conservation Programs.
PB97104392

Publication Date	1996
Personal Author	Royster, J. D.
Page Count	32
Abstract	As a supplement to a study of significant threshold shift (STS) criteria completed in 1992, two additional shift criteria were analyzed. Analyses were restricted to the first eight audiograms for male employees with at least eight tests. This involved a total of 2,903 employees across all fifteen datasets. The two STS criteria examined were called OSHA STS TWICE, and 15 decibles (dB) TWICE at 1 to 4 kilohertz (kHz). The first monitored a change of 10dB or more in the average of hearing thresholds at 2,000, 3,000, and 4,000 hertz (Hz) and persistence on the next audiogram. The second involved a change of 15dB or more at any test frequency from 1,000 through 4,000Hz and persistence on the next audiogram. The two criteria produced smaller percentages of employees tagged per year than any of the previously evaluated criteria. The 15dB TWICE criteria yield the overall highest percentages of true positive tags. The OSHA STS TWICE criterion achieved a higher percentage after positive tags in the control databases only, but its percent true positive tags in the noncontrol database was lower than for either of the 15dB TWICE criteria.
Keywords	Occupational safety and health Noise pollution Auditory defects Noise-induced hearing loss Hearing Criteria Standards Occupational exposure Comparison Graphs(Charts) Thresholds(Perception) Working conditions
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	68B - Noise Pollution & Control 57U - Public Health & Industrial Medicine 57W - Stress Physiology
Corporate Authors	Environmental Noise Consultants, Inc., Raleigh, NC.; National Inst. for Occupational Safety and Health, Cincinnati, OH.
Supplemental Notes	See also PB93-159143. Sponsored by National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
Title Note	Final rept.
NTIS Issue Number	199701