. Author manuscript; available in PMC: 2007 Nov 27.

Published in final edited form as: Am J Infect Control. 2007 Apr;35(3):177–182. doi: 10.1016/j.ajic.2006.01.002

Table 2.

Logistic regression models for predictors of BSI in different subgroups of NICU patients

Subgroup	Significant variables	Relative risk	95% Confidence interval
A. All neonates (N = 2935)	Site NICU 1 NICU 2 Birth weight^* Central venous catheter^†	1.60 Referent 1.09 9.31	1.14-2.24 1.07-1.11 5.87-14.77
B. Neonates with central venous catheter (n = 1132)	Birth weight^* Total parenteral nutrition^†	1.09 4.69	1.07-1.12 2.22-9.87
C. Neonates with CR BSI (compared with non-CR BSI) (n = 205)	Birth weight^* Ventilator^†	1.05 3.74	1.02-1.09^* 1.87-7.48
D. Neonates with gram-positive pathogens (compared with gram-negative pathogens) (n = 195)	Site NICU 1 NICU 2	2.34 Referent	1.16-4.73

Per 100 gram decrease.

^†

Referent category is absence of variable or procedure.