Table 2. CLABSI Incidence in the Medical and Surgical ICUs.

ICU	Care bundle		Patients (n)	Patient days	Catheter days	CVC utilization ratio	CLABSI rate	P value*
Medical ICU	Prior		618	7535	4680	0.62	6.20
	Care bundle	First period	436	3904	1950	0.50	5.13	0.590
		Second period	443	3887	1915	0.49	2.61	0.028
		1–12 months	879	7761	3865	0.49	3.88	0.128
	Third period		408	3760	1903	0.51	1.05	0.004
Surgical ICU	Prior		443	4486	2782	0.62	8.27
	Care bundle	First period	283	2254	1295	0.57	6.95	0.647
		Second period	307	2239	1314	0.59	2.28	0.032
		1–12 months	590	4493	2609	0.58	4.60	0.091
	Third period		340	2259	1072	0.47	3.73	0.194

ICU: intensive care unit, CLABSI: central line-associated bloodstream infections per 1000 catheter days, Prior: July 2012–June 2013, First period: July 2013–December 2013, Second period: January 2014–June 2014, Third period: July 2014–December 2014. ^*P values for each period were compared with the value prior to use of the care bundle.