844 infection control & hospital epidemiology july 2017, vol. 38, no. 7
table 3. Incidence Rate Ratio (IRR) for HA-MRSA and CLABSI Incidence for (A) All Facilities, (B) Teaching Facilities, and (C) Nonteaching Facilitiesa
Table 3A. Incidence Rate Ratio (IRR) for HA-MRSA and CLABSI Incidence for All Facilities HA-MRSA
All facilities ßo (Intercept)
Interval 1 (ß1, pre-guidelines)a Interval 2 (ß2, post-guidelines)b
IRR …
Interval 3 (ß3, post-guidelines update)c Int 2 (ß4, level change post-guidelines)d
Int 3 (ß5, level change post guidelines update)e
1.00 (.972–1.033) .991 (.982–1.00) 0.990 (.986–0.995) .841 (.628–1.128) .910 (.595–1.393)
stream infection. aInterval 1: January 1, 2006, to March 31, 2007 (periods 1 to 16). bInterval 2: April 1, 2007, to January 2, 2009 (periods 17 to 52). cInterval 3: January 3, 2010, to March 31, 2015 (periods 53 to 120). dInt 2 represents the change in baseline rate going from interval 1 to 2. eInt 3 represents change in baseline rate going from interval 2 to 3.
table 3b. Incidence Rate Ratio (IRR) for HA-MRSA and CLABSI Incidence for Teaching Facilities HA-MRSA
Teaching facilities ßo (Intercept)
IRR …
Interval 1 (ß1, pre-guidelines)a Interval 2 (ß2, post-guidelines)b
Int 3 (ß5, level change post guidelines update)e
Interval 3 (ß3, post-guidelines update)c Int 2 (ß4, level change post-guidelines)d
1.022 (0.995–1.050) .989 (.979–.998) .987 (.982–.992)
0.706 (0.522–0.955) 0.804 (0.512–1.263)
stream infection. aInterval 1: January 1, 2006, to March 31, 2007 (periods 1 to 16). bInterval 2: April 1, 2007, to January 2, 2009 (periods 17 to 52). cInterval 3: January 3, 2010, to March 31, 2015 (periods 53 to 120). dInt 2 represents the change in baseline rate going from interval 1 to 2. eInt 3 represents change in baseline rate going from interval 2 to 3.
table 3c. Incidence Rate Ratio (IRR) for HA-MRSA and CLABSI Incidence for Nonteaching Facilities HA-MRSA
Nonteaching Facilities ßo (Intercept)
IRR …
Interval 1 (ß1, pre-guidelines)a Interval 2 (ß2, post-guidelines)b
Interval 3 (ß3, post-guidelines update)c Int 2 (ß4, level change post-guidelines)d
Int 3 (ß5, level change post guidelines update)e
0.980 (0.909–1.056) 0.990 (0.976–1.005) 0.995 (0.989–1.001) 1.196 (0.678–2.110) 1.350 (0.630–2.893)
stream infection. aInterval 1: January 1, 2006, to March 31, 2007 (periods 1 to 16). bInterval 2: April 1, 2007, to January 2, 2009 (periods 17 to 52). cInterval 3: January 3, 2010, to March 31, 2015 (periods 53 to 120). dInt 2 represents the change in baseline rate going from interval 1 to 2. eInt 3 represents change in baseline rate going from interval 2 to 3.
P Value <.001
.60 .20 .11 .53 .44
CLABSI IRR
…
0.997 (0.877–1.134) 1.013 (0.990–1.037) 0.994 (0.985–1.003) 0.905 (0.308–2.661) 0.835 (0.225–3.099)
P Value .27
.97 .26 .21 .86 .79
NOTE. HA-MRSA, hospital-associated methicillin-resistant Staphylococcus aureus; CLABSI, central-line–associated blood-
P Value <.001
.11 .02
<.001 .02 .34
…
1.004 (.964–1.047) 0.996 (.983–1.009) 0.992 (.986–0.998) 0.827 (0.532–1.286) 0.768 (0.410–1.439)
CLABSI IRR
P Value <.001
.89 .04
<.001 .25 .66
CLABSI IRR
…
.957 (.917–1.00) 1.00 (.990–1.014) .993 (.987–.998) .965 (.620–1.503) .861 (.469–1.582)
P Value <.001
.05 .75 .01 .88 .63
NOTE. HA-MRSA, hospital-associated methicillin-resistant Staphylococcus aureus; CLABSI, central-line–associated blood-
P Value <.001
.84 .55 .01 .40 .41
NOTE. HA-MRSA, hospital-associated methicillin-resistant Staphylococcus aureus; CLABSI, central-line–associated blood-
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