The adaptation of noise-induced temporary hearing threshold shift predictive models for modelling the public health policy
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Nofer Institute of Occupational Medicine, Łódź, Poland (Department of Physical Hazards)
Eriksholm Research Centre, Oticon A/S, Snekkersten, Denmark
Nofer Institute of Occupational Medicine, Łódź, Poland (Audiology and Phoniatrics Clinic, Department of Audiology and Phoniatrics)
Zelus, P.C., Metamorfosi, Athens, Greece
Institute of Public Health for the Osijek Baranya County, Osijek, Croatia (Department for Disinfection, Disinfestation and Deratization)
Training Institute for Public Health of Osijek-Baranja County, Osijek, Croatia (Department of Public Health)
Online publication date: 2023-01-20
Corresponding author
Adam Dudarewicz   

Nofer Institute of Occupational Medicine, Department of Physical Hazards, św. Teresy 8, 91-348 Łódź, Poland
Int J Occup Med Environ Health. 2023;36(1):125-38
Objectives: It has been shown that monitoring temporary threshold shift (TTS) after exposure to noise may have a predictive value for susceptibility of developing permanent noise-induced hearing loss. The aim of this study is to present the assumptions of the TTS predictive model after its verification in normal hearing subjects along with demonstrating the usage of this model for the purposes of public health policy. Material and Methods: The existing computational predictive TTS models were adapted and validated in a group of 18 bartenders exposed to noise at the workplace. The performance of adapted TTS predictive model was assessed by receiver operating characteristic (ROC) analysis. The demonstration example of the usage of this model for estimating the risk of TTS in general unscreened population after exposure to loud music in discotheque bars or music clubs is provided. Results: The adapted TTS predictive model shows a satisfactory agreement in distributions of actual and predicted TTS values and good correlations between these values in examined bartenders measured at 4 kHz, and as a mean at speech frequencies (0.5–4 kHz). An optimal cut-off level for recognizing the TTS events, ca. 75% of young people (aged ca. 35 years) may experience TTS >5 dB, while <10% may exhibit TTS of 15–18 dB. Conclusions: The final TTS predictive model proposed in this study needs to be validated in larger groups of subjects exposed to noise. Actual prediction of TTS episodes in general populations may become a helpful tool in creating the hearing protection public health policy. Int J Occup Med Environ Health. 2023;36(1):125–38
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