Earplugs

Intervention

1 paper2 findings

  • 1 lab in 1 country
  • Human trial1

Outcomes

2

Temporary threshold shift ≥10 dB at 4 kHz

downin humans1

1 study
  1. Earplugs decrease temporary threshold shift ≥10 dB at 4 kHz in humans (27.3% to 12.7%).

    Human trial1-mon = 55

    The effect of earplug intervention on temporary threshold shift among small-scale metal workers in Dar es Salaam, Tanzania

    Annals of work exposures and health26 Aug 2026

Temporary threshold shift

downin humans1

1 study
  1. Earplugs decrease temporary threshold shift in humans (0.3 dB to -1.6 dB at 1,000 Hz, 1.9 dB to -1.4 dB at 3,000 Hz).

    Human trial1-mon = 55

    The effect of earplug intervention on temporary threshold shift among small-scale metal workers in Dar es Salaam, Tanzania

    Annals of work exposures and health26 Aug 2026

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