Table 3c. State-specific Standardized Infection Ratios (SIRs) and facility-specific SIR summary measures, NHSN facilities reporting during 2011: Central Line-associated Bloodstream Infections (CLABSI). Ward (non-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 Reporting⁴	No. of Infections		SIR	95% CI for SIR		Facility-specific SIRs at Key Percentiles⁵
									Median
				Observed	Predicted		Lower	Upper	10%	25%	(50%)	75%	90%
Alabama			15	53	68.156	0.778	0.582	1.017	.	.	.	.	.
Alaska			6	17	14.797	1.149	0.669	1.840	.	.	.	.	.
Arizona			8	31	70.557	0.439	0.298	0.624	.	.	.	.	.
Arkansas			10	32	54.307	0.589	0.403	0.832	.	.	.	.	.
California	Yes	Yes^a	342	1582	2642.387	0.599	0.570	0.629	0.000	0.153	0.510	0.846	1.378
Colorado	Yes	Yes	8	77	106.198	0.725	0.572	0.906	.	.	.	.	.
Connecticut			1-4	.	.	.	.	.	.	.	.	.	.
Delaware			4	5	13.480	0.371	0.120	0.866	.	.	.	.	.
Dist. of Columbia	Yes	Yes^a	3	19	16.821	1.130	0.680	1.764	.	.	.	.	.
Florida			44	160	332.285	0.482	0.410	0.562	0.000	0.128	0.332	0.571	0.874
Georgia			29	178	175.414	1.015	0.871	1.175	.	.	.	.	.
Hawaii			5	10	14.491	0.690	0.331	1.269	.	.	.	.	.
Idaho			1-4	.	.	.	.	.	.	.	.	.	.
Illinois			30	153	244.011	0.627	0.532	0.735	0.004	0.231	0.481	0.898	1.682
Indiana			19	200	252.358	0.793	0.686	0.910	.	.	.	.	.
Iowa			12	0	6.499	0.000	.	0.568	.	.	.	.	.
Kansas			9	27	40.534	0.666	0.439	0.969	.	.	.	.	.
Kentucky			9	31	38.316	0.809	0.550	1.148	.	.	.	.	.
Louisiana			21	31	55.436	0.559	0.380	0.794	.	.	.	.	.
Maine			1-4	.	.	.	.	.	.	.	.	.	.
Maryland			12	28	73.578	0.381	0.253	0.550	.	.	.	.	.
Massachusetts			11	86	125.101	0.687	0.550	0.849	.	.	.	.	.
Michigan			28	43	116.789	0.368	0.266	0.496	.	.	.	.	.
Minnesota			8	0	1.982	0.000	.	1.861	.	.	.	.	.
Mississippi			10	38	106.612	0.356	0.252	0.489	.	.	.	.	.
Missouri			7	16	36.616	0.437	0.250	0.710	.	.	.	.	.
Montana			6	5	27.219	0.184	0.060	0.429	.	.	.	.	.
Nebraska			9	70	117.154	0.598	0.466	0.755	.	.	.	.	.
Nevada	Yes	Yes^a	19	156	217.395	0.718	0.609	0.839	.	.	.	.	.
New Hampshire			1-4	.	.	.	.	.	.	.	.	.	.
New Jersey			7	23	24.752	0.929	0.589	1.394	.	.	.	.	.
New Mexico			16	29	59.899	0.484	0.324	0.695	.	.	.	.	.
New York			36	639	581.371	1.099	1.016	1.188	0.000	0.463	1.002	1.349	1.767
North Carolina		Yes^a	32	187	261.337	0.716	0.617	0.826	.	.	.	.	.
North Dakota			1-4	.	.	.	.	.	.	.	.	.	.
Ohio			25	102	186.569	0.547	0.446	0.664	.	.	.	.	.
Oklahoma			12	34	63.909	0.532	0.368	0.743	.	.	.	.	.
Oregon			11	3	16.911	0.177	0.037	0.518	.	.	.	.	.
Pennsylvania	Yes	Yes	176	678	1374.314	0.493	0.457	0.532	0.000	0.189	0.400	0.716	1.264
Puerto Rico			13	79	51.438	1.536	1.216	1.914	.	.	.	.	.
Rhode Island			1-4	.	.	.	.	.	.	.	.	.	.
South Carolina	Yes	Yes^a	66	306	440.312	0.695	0.619	0.777	0.000	0.299	0.545	0.921	1.833
South Dakota			9	14	21.330	0.656	0.359	1.101	.	.	.	.	.
Tennessee	Yes	Yes	31	215	319.276	0.673	0.586	0.770	0.000	0.000	0.481	0.906	1.274
Texas			31	71	120.516	0.589	0.460	0.743	0.000	0.056	0.548	0.977	1.345
Utah			1-4	.	.	.	.	.	.	.	.	.	.
Vermont			0	.	.	.	.	.	.	.	.	.	.
Virginia			10	136	144.936	0.938	0.787	1.110	.	.	.	.	.
Washington			11	37	59.505	0.622	0.438	0.857	.	.	.	.	.
West Virginia			15	12	73.803	0.163	0.084	0.284	.	.	.	.	.
Wisconsin		Yes^a	41	64	128.580	0.498	0.383	0.636	0.000	0.000	0.138	0.609	0.944
Wyoming			13	0	2.383	0.000	.	1.548	.	.	.	.	.
All U.S.			1,252	5,781	8998.281	0.642	0.626	0.659	0.000	0.156	0.484	0.863	1.372

Footnotes for Table 3c:

Data from all wards (for this table wards also include stepdown and specialty care areas [including hematology/oncology, bone marrow transplant]. This excludes LTAC locations [or facilities] and inpatient rehabilitation locations [or facilities]).
Yes indicates the presence of a state mandate to report CLABSI data from any ward to NHSN at the beginning of 2011
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 ward location 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.
SIR data is only displayed for a state if ≥5 facilities reported during the reporting period.
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.