Characterising Occupational Noise Profiles and Workspace Risk Associations across Five Distinct Informal Sectors
This study reveals that workers in five informal sectors in Benin City, Nigeria, face catastrophic noise exposure levels far exceeding safety limits, with multivariable models identifying mechanical processing environments like sawmills, abattoirs, and the vibrating block industry as independent predictors of severe hearing difficulties, chronic stress, and tinnitus, while highlighting a significant health literacy bias in symptom reporting among lower-educated operators.