Table 3 Comparison of the effectiveness of noise reduction strategies in intensive care units
| Â | Intervention | |||
|---|---|---|---|---|
Outcome | Earplugs | Behavioural modification | Sound masking | Acoustic absorption |
Average noise level reduction | NA | 2.7dBA | NA | 3.6 dBA |
Average sleep improvement | 25.3% | 16.1% | 42.7% | NA |