Table 3b. State-specific Standardized Infection Ratios (SIRs) and facility-specific SIR summary measures, NHSN facilities reporting during 2011:
Central Line-associated Bloodstream Infections (CLABSI), Critical Care Locations ¹

The Central Line–associated Blood Stream Infections (CLABSI) Score is reported using a Standardized Infection Ratio (SIR). This calculation compares the number of central line infections in a hospital’s intensive care unit to a national benchmark based on data reported to NHSN from 2006 – 2008. The result is adjusted based on certain factors such as the type and size of a hospital or ICU.

• A score of less than 1 means that the hospital had fewer CLABSIs than hospitals of similar type and size.
• A score of 1 means the hospital's CLABSI score was no different than hospitals of similar type and size.
• A score of more than 1 means the hospital had more CLABSIs than hospitals of similar type and size.

Lower numbers are better. A score of zero (0) – meaning no CLABSIs – is best.

States	State NHSN Mandate2	Any Validation3	No. of Facilities Reporting	No. of Infections		SIR	95% CI for SIR		Facility-specific SIRs at Key Percentiles4
				Observed	Predicted		Lower	Upper	10%	25%	Median (50%)	75%	90%
Alabama	Yes	Yes	74	208	359.328	0.579	0.503	0.663	0.045	0.216	0.472	1.120	2.001
Alaska			8	10	14.787	0.676	0.324	1.244	.	.	.	.	.
Arkansas	Yes	Yes	43	100	207.440	0.482	0.392	0.586	0.000	0.000	0.408	0.786	1.674
Arizona			57	213	360.114	0.591	0.515	0.676	0.000	0.000	0.353	0.679	1.076
California	Yes	Yesa	317	1,051	1,944.915	0.540	0.508	0.574	0.000	0.074	0.453	0.829	1.414
Colorado	Yes	Yes	49	111	211.3991	0.525	0.432	0.632	0.000	0.138	0.339	0.644	0.936
Connecticut	Yes	Yesa	30	113	208.046	0.543	0.448	0.653	0.000	0.264	0.529	0.892	1.309
District of Columbia	Yes	Yesa	8	87	114.812	0.758	0.607	0.935	.	.	.	.	.
Delaware	Yes	Yesa	8	40	69.632	0.574	0.410	0.782	.	.	.	.	.
Florida			183	752	1,421.509	0.529	0.492	0.568	0.000	0.088	0.423	0.769	1.155
Georgia			102	394	550.737	0.715	0.646	0.790	0.000	0.222	0.478	0.917	1.304
Hawaii	Yes		14	8	63.550	0.126	0.054	0.248	.	.	.	.	.
Iowa			35	60	91.776	0.654	0.499	0.842	.	.	.	.	.
Idaho			11	15	43.740	0.343	0.192	0.566	.	.	.	.	.
Illinois	Yes	Yesa	146	391	639.980	0.611	0.552	0.675	0.000	0.000	0.506	0.934	1.517
Indiana			83	159	382.642	0.416	0.353	0.485	0.000	0.000	0.321	0.470	0.875
Kansas			42	52	150.337	0.346	0.258	0.454	.	.	.	.	.
Kentucky			71	180	273.347	0.659	0.566	0.762	0.000	0.000	0.358	0.801	0.984
Louisiana			69	199	278.348	0.715	0.619	0.821	0.000	0.388	0.687	1.025	1.500
Massachusetts	Yes	Yes	67	203	402.526	0.504	0.437	0.579	0.000	0.000	0.476	0.802	1.107
Maryland	Yes	Yesa	47	226	302.475	0.747	0.653	0.851	0.000	0.000	0.478	0.957	1.534
Maine			22	45	44.331	1.015	0.740	1.358	.	.	.	.	.
Michigan			91	215	666.756	0.322	0.281	0.369	0.000	0.000	0.224	0.466	0.584
Minnesota			48	93	230.664	0.403	0.325	0.494	0.000	0.155	0.300	0.485	0.655
Missouri			75	191	416.144	0.459	0.396	0.529	0.000	0.000	0.223	0.743	1.043
Mississippi			42	106	161.280	0.657	0.538	0.795	0.000	0.260	0.511	0.876	1.492
Montana			11	17	23.072	0.737	0.429	1.180	.	.	.	.	.
North Carolina		Yesa	87	275	505.157	0.544	0.482	0.613	0.000	0.000	0.319	0.707	0.998
North Dakota			6	10	39.504	0.253	0.121	0.466	.	.	.	.	.
Nebraska			19	48	79.909	0.601	0.443	0.796	.	.	.	.	.
New Hampshire	Yes	Yes	24	25	45.169	0.553	0.358	0.817	.	.	.	.	.
New Jersey	Yes	Yes	72	322	466.765	0.690	0.617	0.769	0.000	0.252	0.608	1.138	1.697
New Mexico		Yesa	27	43	82.254	0.523	0.378	0.704	.	.	.	.	.
Nevada	Yes	Yesa	22	126	251.114	0.502	0.418	0.597	.	.	.	.	.
New York	Yes	Yesa	177	802	1,148.246	0.698	0.651	0.749	0.233	0.381	0.682	1.024	1.591
Ohio			134	368	827.977	0.444	0.400	0.492	0.000	0.063	0.362	0.683	0.993
Oklahoma	Yes	Yesa	52	121	255.077	0.474	0.394	0.567	0.000	0.000	0.183	0.452	0.924
Oregon	Yes	Yes	43	63	156.767	0.402	0.309	0.514	0.000	0.000	0.295	0.402	0.855
Pennsylvania	Yes	Yes	157	483	1,073.668	0.450	0.411	0.492	0.000	0.062	0.424	0.722	1.165
Puerto Rico			19	113	83.865	1.347	1.110	1.620	.	.	.	.	.
Rhode Island			10	43	60.013	0.717	0.518	0.965	.	.	.	.	.
South Carolina	Yes	Yesa	55	177	269.510	0.657	0.564	0.761	0.000	0.000	0.582	1.059	1.704
South Dakota			12	11	30.711	0.358	0.179	0.641	.	.	.	.	.
Tennessee	Yes	Yes	93	371	506.675	0.732	0.660	0.811	0.000	0.357	0.620	1.104	1.737
Texas	Yes		264	787	1,453.983	0.541	0.504	0.580	0.000	0.000	0.381	0.827	1.193
Utah	Yes		25	60	111.883	0.536	0.409	0.690	.	.	.	.	.
Virginia	Yes	Yes	81	269	405.529	0.663	0.586	0.748	0.000	0.247	0.481	0.987	1.399
Vermont			8	6	19.784	0.303	0.111	0.660	.	.	.	.	.
Washington	Yes	Yesa	62	113	260.523	0.434	0.357	0.521	0.000	0.000	0.334	0.597	1.086
Wisconsin		Yesa	69	164	275.599	0.595	0.507	0.693	0.000	0.224	0.462	0.930	1.169
West Virginia	Yes		38	92	157.339	0.585	0.471	0.717	.	.	.	.	.
Wyoming			12	3	7.982	0.376	0.078	1.098
All U.S.			3,321	10,134	18,208.687	0.557	0.546	0.567	0.000	0.100	0.438	0.835	1.329

Footnotes for Table 3b:

1. Data from all ICUs; excludes wards (and other non-critical care locations), NICUs, LTAC locations (or facilities), and inpatient rehabilitation locations (or facilities).
2. Yes indicates the presence of a state mandate to report CLABSI data from any ICU to NHSN at the beginning of 2011
3. Yes indicates that the state health department reported the completion of either or both of the following validation studies of NHSN CLABSI data reported from any ICU during the reporting period: data quality assessment of missing or implausible values along with state health department followup with identified facilities, and detection of outlier facilities along with state health department followup with identified facilities.
   Yes^a indicates that the state completed one or both of these activities and also conducted an audit of medical records. Information on validation efforts was requested from all states, regardless of the presence of a legislative mandate for the particular HAI type and location. Some states without mandatory reporting of a given HAI to the state health department have performed validation on NHSN data that is voluntarily shared with them by facilities.
4. Facility-specific key percentiles were only calculated if ≥20 facilities had ≥1.0 predicted HAI during the reporting period. If a single facility’s predicted number of HAIs (e.g., CLABSI) was ‹1.0, a facility-specific SIR was neither calculated nor included in the determinations of the distribution of facility-specific SIRs.