. 2020 Oct 5;174(12):1176–1183. doi: 10.1001/jamapediatrics.2020.3223

Table 2. Regression Models to Evaluate Changes in Rates of NICU CLABSI Over Time by Birth Weight Category.

Model	Yearly change (95% CI)^a
CLABSI per 1000 central catheter–days
Time	0.99 (0.95-1.03)
Birth weight ≤1500 g^b	2.20 (1.84-2.65)
CLABSI per 10 000 patient-days
Time	0.96 (0.92-1.00)
Birth weight ≤1500 g^b	3.65 (2.82-4.73)
Central catheter utilization
Time	0.97 (0.95-1.00)
Birth weight ≤1500 g^b	1.88 (1.62-2.18)

Abbreviations: CLABSI, central catheter–associated bloodstream infection; NICU, neonatal intensive care unit.

^{^a}

Incidence rate ratios are reported for device-associated and population-based rates. Odds ratios are reported for device utilization.

^{^b}

Birth weight greater than 1500 g is the reference category. Time 0 is quarter 1 of 2013.