Prevention of peripherally inserted central line-associated blood stream infections in very low-birth-weight infants by using a central line bundle guideline with a standard checklist: a case control study

Table 3 Comparisons of CRBSI and colonization infection rate (Cases, / 1000 catheter days)

Group	Total catheter days (d)	Colonization infection		CRBSI
Group	Total catheter days (d)	Cases	Infection rate	Cases	Infection rate
Control	1299	9	6.9	4	3.1
CLB	1819	4	2.2	0	0
x ²			4.082		3.463^a
P			0.043		0.063

^aThere was a cell-expectation count as less than 5, the minimum expectation count was 1.67, using Variance test to correct

ISSN: 1471-2431