Volume 17, Number 6—June 2011
Cefepime-Resistant Pseudomonas aeruginosa
|Variable||Unadjusted OR||Adjusted OR (95% CI)||p value|
|Prior use of extended-spectrum cephalosporin||2.87||2.18 (1.57–3.04)||<0.001|
|Prior use of extended-spectrum penicillin||2.99||1.91 (1.22–2.99)||0.005|
|Prior use of quinolone||2.61||1.96 (1.38–2.78)||<0.001|
|Prior use of carbapenem||2.74||1.70 (0.90–3.21)||0.10|
|Transfer from outside facility||1.85||1.49 (1.09–2.04)||0.01|
|Length of hospital stay before culture||NA||1.00 (0.99–1.01)†||0.81|
*OR, odds ratio; CI, confidence interval; NA, not applicable. No substantive changes were found when above analyses were limited to bloodstream isolates only.
†Odds associated with each 1-day increase in hospital stay.