Cochrane · systematic review · CD015066
Hearing protection field attenuation estimation systems and associated training for reducing workers’ exposure to noise
Morata, TC, Gong, W, Tikka, C, et al. · Cochrane Database of Systematic Reviews · 2024 · Cochrane Library
WorkAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
10
current version
GRADE rated
5
No studies
5
Included studies
NR
No studies 5 · 50%Ungraded 0 · 0%Very low 0 · 0%Low 1 · 10%Moderate 4 · 40%High 0 · 0%
Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.
Questions and results
Effects of instructions versus no instructions for fit testing HPDs
Population: workers exposed to noise using earplugs
| Outcome | Effect | Evidence | Status / GRADE |
|---|---|---|---|
PAR (dB) at short‐term Effects of instructions vs no instructions | no estimate extracted | 1 study · 285 participants | Moderate Downgraded: imprecision |
PAR (dB) at long‐term Effects of instructions vs no instructions | no estimate extracted | 1 study · 103 participants | Moderate Downgraded: imprecision |
PAR (dB) at immediate Effects of instructions vs no instructions | no estimate extracted | 1 study · 100 participants | Low Downgraded: risk of bias, imprecision |
PAR pass rate (%) Effects of instructions vs no instructions | no estimate extracted | NR | No studies |
Adverse effects Effects of instructions vs no instructions | no estimate extracted | NR | No studies |
Proportion of workers who wear HPDs Effects of instructions vs no instructions | no estimate extracted | NR | No studies |
Effects of extensive instructions versus simple instructions for fit testing HPDs
Population: workers exposed to noise using HPDs
| Outcome | Effect | Evidence | Status / GRADE |
|---|---|---|---|
PAR (dB) ‐ Fit testing of foam earplugs (immediate) Effects of extensive instructions vs simple instructions | no estimate extracted | 1 study · 321 participants | Moderate Downgraded: imprecision |
PAR pass rate (%) ‐ Fit testing of foam earplugs (immediate) Effects of extensive instructions vs simple instructions | RR 1.75 [1.44, 2.11] | 1 study · 321 participants | Moderate Downgraded: imprecision |
Adverse effects Effects of extensive instructions vs simple instructions | no estimate extracted | NR | No studies |
Proportion of workers who wear HPDs Effects of extensive instructions vs simple instructions | no estimate extracted | NR | No studies |