Table 2. National Standardized Infection Ratios (SIRs) and facility-specific percentiles using HAI data reported from all NHSN facilities reporting during 2010 by HAI and patient population: Central Line-associated Bloodstream Infections (CLABSIs), Catheter-associated Urinary Tract Infections (CAUTIs), and Surgical Site Infections (SSIs) combined procedures

HAI and Patient Population or Surgical Procedure		No. of Facilities Reporting		No. of Infections		SIR	95% CI for SIR		Facility-specific SIRs at Key Percentiles1
				Observed	Predicted		Lower	Upper	10%	25%	Median (50%)	75%	90%
CLABSI, all2		2,389		13,812	20,184.815	0.684	0.673	0.696	0.000	0.232	0.564	0.961	1.525
ICUs 3		2,140		7,206	11,020.512	0.654	0.639	0.669	0.000	0.197	0.538	0.947	1.531
Wards 4		1,069		5,241	7,200.263	0.728	0.708	0.748	0.000	0.187	0.533	0.972	1.560
NICUs 5		507		1,365	1,964.039	0.695	0.659	0.733	0.000	0.237	0.611	1.098	1.752
CAUTIs ,all6		1,086		9,995	10,656.872	0.938	0.920	0.956	0.000	0.293	0.734	1.243	1.900
ICUs3		806		5,621	5,811.590	0.967	0.942	0.993	0.000	0.252	0.714	1.345	1.865
Wards4		688		4,374	4,845.282	0.903	0.876	0.930	0.000	0.271	0.725	1.229	1.967
			No. of Procedures
SSI, combined procedures7		1,385	529,038	4,737	5,170.309	0.916	0.890	0.943	0.000	0.325	0.799	1.292	1.813
	Hip arthroplasty	954	128,721	1,091	1,123.897	0.971	0.914	1.030	0.000	0.239	0.799	1.408	2.252
	Knee arthroplasty	966	192,804	1,090	1,221.747	0.892	0.840	0.947	0.000	0.000	0.695	1.329	2.143
	Coronary artery bypass graft8	425	79,612	868	1,058.919	0.820	0.766	0.876	0.000	0.000	0.569	1.170	1.955
	Cardiac surgery	165	19,036	119	142.436	0.835	0.692	1.000	0.000	0.000	0.637	0.916	1.451
	Peripheral vascular bypass surgery	50	2,575	63	67.379	0.935	0.718	1.196	0.281	0.493	0.895	1.221	1.550
	Abdominal aortic aneurysm repair	31	492	5	7.715	0.648	0.255	1.363	.	.	.	.	.
	Colon surgery	462	37,383	971	1,067.917	0.909	0.853	0.968	0.000	0.257	0.788	1.367	1.871
	Rectal surgery	21	685	28	21.792	1.285	0.854	1.857	0.000	0.000	1.141	1.771	2.289
	Abdominal hysterectomy	604	54,113	407	382.109	1.065	0.964	1.174	0.000	0.000	0.765	1.594	2.526
	Vaginal hysterectomy	233	13,617	95	76.398	1.243	1.006	1.520	0.000	0.359	0.906	1.177	1.991

Footnotes for Table 2:

1. To improve estimating SIR distributions, facility-specific key percentiles were only calculated for patient populations or surgical procedures in which ≥20 facilities had a predicted number of HAIs (e.g., CLABSI, CAUTI, or SSI) ≥1 during the reporting period. If a single facility’s predicted number of HAIs was <1.0, a facility-specific SIR was neither calculated nor included in the determinations of the distribution of facility-specific SIRs.
2. Data from all ICUs, wards (and other non-critical care locations), NICUs and LTAC locations (or facilities).
3. Data from all ICUs; excludes wards (and other non-critical care locations), NICUs and LTAC locations (or facilities).
4. Data from all wards (for this table wards also include stepdown, specialty care areas ^{including hematology/oncology, bone marrow transplant}, and LTAC locations ^{or facilities})
5. Data from all NICU locations, including Level II/III and Level III nurseries. For purposes of this report, both umbilical-line and central-line associated bloodstream infections are considered CLABSIs.
6. Data from all ICUs, wards (and other non-critical care locations), and LTAC locations (or facilities).
7. 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.)
8. Coronary artery bypass graft includes procedures with either chest only or chest and donor site incisions.

 

Next Table