Table 2 Incidence rate ratios of third-generation, cephalosporin-resistantEnterobacteriaceae–related hospital-acquired infections with multivariate poisson regression analysis^a

0.97 (0.89 to 1.06)

0.50

1.05 (0.91 to 1.21)

0.52

Before targeted screening^e

1

1

After targeted screening^f

0.30 (0.098 to 0.94)

0.04

0.50 (0.12 to 2.01)

0.32

0.99 (0.91 to 1.08)

0.85

1.01 (0.88 to 1.17)

0.18

Before targeted screening^e

1

1

After targeted screening^f

0.28 (0.090 to 0.88)

0.03

0.54 (0.13 to 2.25)

0.40