Table 3. Comparison of alarm counts pre-and post-intervention.

	Number of Alarms		Monitoring Hours (2 months per phase)		Weighted Alarm Countsa		Bootstrap Means ± SD per Bed Hour		Bootstrap 95% CI of Means		Percent Alarm Reduction	Bootstrap p-value
Alarm Types / Phase	Pre	Post	Pre	Post	Pre	Post	Pre	Post	Pre	Post
All Medium and High Priority	236507	240242	36545	38205	236507	229804	6.47 ± 0.05	6.29 ± 0.04	6.38–6.56	6.20–6.38	2.8%	0.004
All High Priority	38612	39888	36545	38205	38612	38155	1.06 ± 0.02	1.04 ± 0.02	1.02–1.10	1.01–1.08	1.2%	0.666
All Medium Priority (MP)	197895	200354	36545	38205	197895	191649	5.41 ± 0.03	5.24 ± 0.03	5.34–5.48	5.18–5.31	3.2%	<0.001
All Alarm Advisorb	139682	139153	36545	38205	139682	133107	3.82 ± 0.03	3.64 ± 0.03	3.76–3.88	3.59–3.70	4.7%	<0.001
MP Heart Rate	36475	34576	36545	38205	36475	33074	1.00 ± 0.02	0.91 ± 0.01	0.97–1.03	0.88–0.93	9.3%	<0.001
MP Respiratory Rate	53404	49233	36545	38205	53404	47094	1.46 ± 0.02	1.29 ± 0.02	1.42–1.50	1.25–1.33	11.8%	<0.001
MP SpO2	40034	41722	36545	38205	40034	39909	1.10 ± 0.01	1.09 ± 0.01	1.07–1.12	1.07–1.12	0.3%	0.854
MP Arterial	9769	13622	1822	3021	9769	8216	5.36 ± 0.15	4.51 ± 0.09	5.07–5.67	4.33–4.69	15.9%	<0.001

SD, standard deviation. CI, confidence intervals.

^aData were weighted according to the number of overall monitoring hours per phase (Pre: 36545 hours, Post: 38205 hours). Arterial alarm data were weighted according to the number of arterial line monitoring hours per phase (Pre: 1822 hours, Post: 3021 hours).

^bConsists of alarms addressed by Alarm Advisor: medium priority heart rate, respiratory rate, SpO₂, and arterial blood pressure alarms.