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. Author manuscript; available in PMC: 2013 Dec 10.
Published in final edited form as: Infect Control Hosp Epidemiol. 2009 Jun;30(6):10.1086/597512. doi: 10.1086/597512

Table 4.

Incidence densities and incidence rate ratios for colonization and bacteremia with resistant GNRs*

N Hospital Person-Days Incidence Density (events/100 person-days) Incidence Rate Ratio (95% CI)
Time to first resistant GNR colonizer 376 PGH 5676 6.6 Reference
641 JFMH 4149 15.4 2.3 (2.1-2.7)

Time to first non-enteric resistant GNR colonizer 137 PGH 5676 2.4 Reference
462 JFMH 4149 11.1 4.6 (3.8–5.6)

Time to first enteric resistant GNR colonizer 304 PGH 5676 5.4 Reference
489 JFMH 4149 11.8 2.2 (1.9-2.5)

Time to first blood culture positive with resistant GNR 59 PGH 5676 1.0 Reference
299 JFMH 4149 7.2 6.9 (5.2-9.2)

Time to first blood culture positive with non-enteric resistant GNR 34 PGH 5676 0.6 Reference
95 JFMH 4149 2.3 3.8 (2.6-5.7)

Time to first blood culture positive with enteric resistant GNR 27 PGH 5676 0.5 Reference
240 JFMH 4149 5.8 12.2 (8.2–18.1)

Abbreviations: CI – Confidence interval; JFMH – Jose Fabella Memorial Hospital; GNR – Gram negative rod; PGH – Philippines General Hospital

*

Since calculations were censored after the first event had occurred, the patient days at risk, and the total number of pathogens cannot be compared directly across the subsections.