Table 5. Changes in National Standardized Infection Ratios (SIRs) 2009 compared to 2010: Central Line-associated Bloodstream Infections (CLABSI) and Surgical Site Infections (SSI) combined procedures ¹

State		All Locations Reporting				Continuously Reporting Locations
		2009	2010	Significant Change	p-value	No. of Continuous Reporters 2	Significant Change 3	p-value 3
CLABSI, all locations		0.854	0.684	Decrease	<.001	1644	Decrease	<.001
SSI, combined procedures 1		0.981	0.916	Decrease	0.0010	904	No change	0.1630
	Hip arthroplasty	0.968	0.971	No change	0.9460	678	No change	0.5749
	Knee arthroplasty	0.944	0.892	No change	0.2229	579	No change	0.9012
	Coronary artery bypass graft 4	0.962	0.820	Decrease	0.0007	306	Decrease	0.0206
	Cardiac surgery	0.859	0.835	No change	0.8443	137	No change	0.8942
	Peripheral vascular by pass surgery	0.714	0.935	No change	0.2033	35	No change	0.1115
	Abdominal aortic aneurysm repair	0.469	0.648	No change	0.7360	23	No change	0.7305
	Colon surgery	0.971	0.909	No change	0.1609	329	No change	0.6640
	Rectal surgery	2.599	1.285	Decrease	0.0044	11	Decrease	0.0234
	Abdominal hysterectomy	1.173	1.065	No change	0.1761	457	No change	0.2558
	Vaginal hysterectomy	1.229	1.243	No Change	0.9411	154	No change	0.7339

Footnotes for Table 5:

1. SSIs included are those following select surgical procedures approximating procedures covered by SCIP, using only SSIs that were classified as deep incisional or organ/space, and detected upon admission or readmission. Specific NHSN procedures are listed in Appendix A.
2. Continuous reporters for CLABSI include all facilities that reported any data from at least one location during both 2009 and 2010.  Continuous reporters for SSI include all facilities that reported any data for any of the 10 SCIP procedures during both 2009 and 2010.
3. Adjusted by limiting analysis to only continuous reporters, i.e., facility locations reporting for 1 month or more during 2009 that also reported during 2010.
4. Coronary artery bypass graft includes procedures with either chest only or chest and donor site incisions.

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