. Author manuscript; available in PMC: 2014 May 27.

Published in final edited form as: JAMA Intern Med. 2013 May 27;173(10):874–879. doi: 10.1001/jamainternmed.2013.101

Table 3.

2010 National Healthcare Safety Network Standardized Infection Ratios for Cauti–Michigan Vs. Non-Michigan^A

		Number of Infections
Location	Number of Facilities	Observed	Expected^*	SIR	95% CI
National	1062	9,845	10,456	0.94	0.92 – 0.96
Michigan	24	150	201	0.75	0.63 – 0.87

Data obtained through cooperation with the Centers for Disease Control and Prevention, National Healthcare Safety Network (NHSN) and the Michigan Department of Community Health. Data presented are derived from facilities reporting to NHSN during 2010 and include data from all ICUs and wards; excludes NICUs.

Expected values are based on indirect standardization to 2009 NHSN catheter-associated urinary tract infection rates.

Abbreviations: CAUTI–catheter-associated urinary tract infection; SIR: standardized infection ratio = Observed/Expected; CI=confidence interval.