Prevention of Noise-induced hearing loss. Noise-induced hearing loss
Conditions
Interventions
Intervention 1: Intervention (as control arm)- On Factory 1, Hearing protection devices were used to reduce noise exposure level between 85 and 90 dBA, based on noise reduction rate (currently adopte
Prevention
Intervention (as control arm)- On Factory 1, Hearing protection devices were used to reduce noise exposure level between 85 and 90 dBA, based on noise reduction rate (currently adopted by the factory
Second arm (Intervention)- Hearing protection devices were used to reduce noise exposure level between 80 and 85 dBA
Sponsors
Post Graduate Research Grant University of Malaya
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: Inclusion criterion is subjects exposed to noise levels above action level (85 dBA in one factory and 80 dBA in another factory). Exclusion criteria are refused to participate, contract workers, who have diseases of ear, impacted wax, perforated tympanic membrane, physical trauma to ear, lorry drivers, who had undergone ear surgery and those have congenital hearing loss.
Exclusion criteria
Exclusion criteria:
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Hearing threshold level. Timepoint: Six months. Method of measurement: Using manual audiometer. | — |
Secondary
| Measure | Time frame |
|---|---|
| Measuring knowledge, attitude and practice on noise-induced hearing loss. Timepoint: Six months. Method of measurement: Through questionnaire. | — |
Countries
Malaysia
Contacts
Public ContactAssociate Prof. Dr. Tin Tin Su
University of Malaya
Outcome results
None listed