Effectiveness of a noise reduction intervention in the intensive care unit: A prospective bicenter study

doi:10.5492/wjccm.v14.i4.106359

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World Journal of Critical Care Medicine

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2220-3141

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

Prospective Study

World J Crit Care Med. Dec 9, 2025; 14(4): 106359
Published online Dec 9, 2025. doi: 10.5492/wjccm.v14.i4.106359

Table 1 Table for average sound level

Factors	Coefficient (dB)	Standard error (dB)	95%CI (dB)	P value
Phase¹	3.10	1.18	(0.76-5.44)	0.010
TTSH vs NUH	5.73	1.39	(2.96-8.51)	0.000
Phase#TTSH²	-4.78	1.79	(-8.35 to -1.22)	0.009
Hour of day (14^th hour)	-1.79	1.08	(-3.94-0.36)	0.102
Hour of day (20^th hour)	-2.38	1.08	(-4.53 to -0.23)	0.031
SICU	-0.55	1.03	(-2.59-1.49)	0.595

¹Pre-intervention vs post-intervention.

²Interaction between the phase of the study (pre-intervention vs post-intervention) and the hospital variable (Tan Tock Seng Hospital vs National University Hospital).

TTSH: Tan Tock Seng Hospital; NUH: National University Hospital; SICU: Surgical intensive care unit.

Full Size Table

Table 2 Table for peak sound level

Factors	Coefficient (dB)	Standard error (dB)	95%CI (dB)	P value
Phase¹	-0.62	1.71	(-4.02-2.78)	0.718
TTSH vs NUH	4.61	2.02	(0.59-8.63)	0.025
Phase#TTSH²	-4.28	2.60	(-9.45-0.90)	0.104
Hour of day (14^th hour)	-0.64	1.57	(-3.76-2.48)	0.684
Hour of day (20^th hour)	-1.44	1.57	(-4.56-1.68)	0.363
SICU	2.09	1.49	(-0.87-5.04)	0.164

¹Pre-intervention vs post-intervention.

²Interaction between the phase of the study (pre-intervention vs post-intervention) and the hospital variable (Tan Tock Seng Hospital vs National University Hospital).

TTSH: Tan Tock Seng Hospital; NUH: National University Hospital; SICU: Surgical intensive care unit.

Full Size Table

Citation: Ong B, See KC, Kim SS, Lau YH. Effectiveness of a noise reduction intervention in the intensive care unit: A prospective bicenter study. World J Crit Care Med 2025; 14(4): 106359
URL: https://www.wjgnet.com/2220-3141/full/v14/i4/106359.htm
DOI: https://dx.doi.org/10.5492/wjccm.v14.i4.106359