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Table 3 Comparison of the effectiveness of noise reduction strategies in intensive care units

From: Clinical review: The impact of noise on patients' sleep and the effectiveness of noise reduction strategies in intensive care units

  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
  1. NA, not applicable.