The international journal of occupational and environmental medicine
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Int J Occup Environ Med · Oct 2014
Randomized Controlled TrialTraining in using earplugs or using earplugs with a higher than necessary noise reduction rating? A randomized clinical trial.
Noise-induced hearing loss (NIHL) is one of the most common occupational diseases and the second most common cause of workers' claims for occupational injuries. ⋯ Training in appropriate use of earplugs significantly affects the efficacy of earplugs---even more than using an earplug with higher NRR.