a. Multidrug-resistant (MDR) gram-negative bacilli (GNB)
colonization at Landstuhl Regional Medical Center (LRMC) by month of admission,
June 2009–May 2012
* p<0.0001 for test of trend over time
b. Multidrug-resistant (MDR) gram-negative bacilli (GNB)
colonization at U.S. Military Treatment Facilities (MTFs) by month of admission,
June 2009–May 2012
* p=0.0042 for test of trend over time; ** p<0.0001 for test of
trend over time