Illinois Hospital Report Card

and Consumer Guide to Health Care

Northwestern Medicine Lake Forest Hospital

Patient Safety - CDI & MRSA

Clostridioides difficile infections (CDI) and Methicillin-resistant Staphylococcus aureus (MRSA) bloodstream infections

Facility-wide Healthcare Facility Onset Incidence Rates for CDI and MRSA are presented below. These rates are based on results of laboratory tests that were obtained on or after day four of an inpatient stay and do not consider presence or timing of clinical signs or symptoms. The Standardized Infection Ratio (SIR) is presented, which is a summary measure used to determine if rates of CDI and MRSA bloodstream infections are statistically different from the national average. Statewide summaries of CDI and MRSA data arranged by hospital are also included. Note: Starting with 2016 data, new methods for risk adjustment were used.

Statistical Significance

Statistically significantly better than state average or performing at the best possible rate

Not statistically significantly better or worse than state average

Statistically significantly worse than state average

Footnotes

Key	Description
45	Complete Reporting: Zero infections. Number of predicted LabID events too low to calculate a precise SIR
47	Complete Reporting: Number of predicted LabID events too low to calculate a precise SIR
114	Complete Reporting: Number of predicted events too low to calculate a precise SIR
117	Complete Reporting: Zero infections. Number of reported events is not significantly different than predicted

Healthcare Facility Onset Incidence Rate	Result	SIR
Methicillin-resistant Staphylococcus aureus (MRSA) blood stream infections Q1 2023 - Q4 2023 Result 1 infections, 55963 patient days Rating SIR: 0.44	1 infections, 55963 patient days	0.44
Description Methicillin-resistant Staphylococcus aureus infections summarized as a Standardized Infection Ratio Historical Data
Measure	Result	Rating
Q1 2022 - Q4 2022 Result 1 infections, 58181 patient days Rating SIR: 0.45	1 infections, 58181 patient days	0.45
Q1 2021 - Q4 2021 Result 3 infections, 50701 patient days Rating SIR: 1.57	3 infections, 50701 patient days	1.57
Q1 2019 - Q4 2019 Result 0 infections, 45204 patient days ¹¹⁷ Rating SIR: 0.00 ¹¹⁷	0 infections, 45204 patient days ¹¹⁷	0.00 ¹¹⁷
Q1 2018 - Q4 2018 Result 0 infections, 39805 patient days ¹¹⁷ Rating SIR: 0.00 ¹¹⁷	0 infections, 39805 patient days ¹¹⁷	0.00 ¹¹⁷
Q1 2017 - Q4 2017 Result 0 infections, 27876 patient days ⁴⁵ Rating SIR: N/A ⁴⁵	0 infections, 27876 patient days ⁴⁵	N/A ⁴⁵
Q1 2016 - Q4 2016 Result 2 infections, 26909 patient days ⁴⁷ Rating SIR: N/A ⁴⁷	2 infections, 26909 patient days ⁴⁷	N/A ⁴⁷
Q1 2015 - Q4 2015 Result 2 infections, 25889 patient days ¹¹⁴ Rating SIR: N/A ¹¹⁴	2 infections, 25889 patient days ¹¹⁴	N/A ¹¹⁴
Q1 2014 - Q4 2014 Result 1 infections, 46900 patient days Rating SIR: 0.56	1 infections, 46900 patient days	0.56
Q1 2013 - Q4 2013 Result 0 infections, 33350 patient days ¹¹⁷ Rating SIR: 0.00 ¹¹⁷	0 infections, 33350 patient days ¹¹⁷	0.00 ¹¹⁷
Q1 2012 - Q4 2012 Result 1 infections, 30838 patient days Rating SIR: 0.87	1 infections, 30838 patient days	0.87
Q1 2012 - Q2 2012 Result 1 infections, 15576 patient days Rating SIR: 0.64	1 infections, 15576 patient days	0.64
Clostridioides difficile infections (CDI) Q1 2023 - Q4 2023 Result 7 infections, 53385 patient days Rating SIR: 0.31	7 infections, 53385 patient days	0.31
Description Clostridium difficile infections summarized as a Standardized Infection Ratio Historical Data
Measure	Result	Rating
Q1 2022 - Q4 2022 Result 8 infections, 54566 patient days Rating SIR: 0.39	8 infections, 54566 patient days	0.39
Q1 2021 - Q4 2021 Result 24 infections, 46662 patient days Rating SIR: 1.10	24 infections, 46662 patient days	1.10
Q1 2019 - Q4 2019 Result 22 infections, 40847 patient days Rating SIR: 0.93	22 infections, 40847 patient days	0.93
Q1 2018 - Q4 2018 Result 25 infections, 35545 patient days Rating SIR: 1.19	25 infections, 35545 patient days	1.19
Q1 2017 - Q4 2017 Result 17 infections, 23989 patient days Rating SIR: 0.76	17 infections, 23989 patient days	0.76
Q1 2016 - Q4 2016 Result 7 infections, 23453 patient days Rating SIR: 0.40	7 infections, 23453 patient days	0.40
Q1 2015 - Q4 2015 Result 14 infections, 22203 patient days Rating SIR: 0.88	14 infections, 22203 patient days	0.88
Q1 2014 - Q4 2014 Result 10 infections, 43155 patient days Rating SIR: 0.40	10 infections, 43155 patient days	0.40
Q1 2013 - Q4 2013 Result 3 infections, 29113 patient days Rating SIR: 0.16	3 infections, 29113 patient days	0.16
Q1 2012 - Q4 2012 Result 11 infections, 26329 patient days Rating SIR: 0.63	11 infections, 26329 patient days	0.63