Illinois Hospital Report Card

and Consumer Guide to Health Care

Northwestern Memorial 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 the national average or performing at the best possible rate

Not statistically significantly better or worse than the national average

Statistically significantly worse than the national average

Healthcare Facility Onset Incidence Rate	Result	SIR
Methicillin-resistant Staphylococcus aureus (MRSA) blood stream infections Q1 2024 - Q4 2024 Result 8 infections, 348774 patient days Rating SIR: 0.47	8 infections, 348774 patient days	0.47
Description Methicillin-resistant Staphylococcus aureus infections summarized as a Standardized Infection Ratio Historical Data
Measure	Result	Rating
Q1 2023 - Q4 2023 Result 15 infections, 331885 patient days Rating SIR: 0.86	15 infections, 331885 patient days	0.86
Q1 2022 - Q4 2022 Result 11 infections, 331612 patient days Rating SIR: 0.67	11 infections, 331612 patient days	0.67
Q1 2021 - Q4 2021 Result 7 infections, 328800 patient days Rating SIR: 0.43	7 infections, 328800 patient days	0.43
Q1 2020 - Q4 2020 Result 12 infections, 291802 patient days Rating SIR: 0.85	12 infections, 291802 patient days	0.85
Q1 2019 - Q4 2019 Result 16 infections, 299758 patient days Rating SIR: 1.08	16 infections, 299758 patient days	1.08
Q1 2018 - Q4 2018 Result 9 infections, 291482 patient days Rating SIR: 0.65	9 infections, 291482 patient days	0.65
Q1 2017 - Q4 2017 Result 10 infections, 269791 patient days Rating SIR: 0.75	10 infections, 269791 patient days	0.75
Q1 2016 - Q4 2016 Result 7 infections, 267091 patient days Rating SIR: 0.54	7 infections, 267091 patient days	0.54
Q1 2015 - Q4 2015 Result 16 infections, 262079 patient days Rating SIR: 1.06	16 infections, 262079 patient days	1.06
Q1 2014 - Q4 2014 Result 20 infections, 263932 patient days Rating SIR: 1.25	20 infections, 263932 patient days	1.25
Q1 2013 - Q4 2013 Result 14 infections, 263840 patient days Rating SIR: 0.89	14 infections, 263840 patient days	0.89
Q1 2012 - Q4 2012 Result 18 infections, 273288 patient days Rating SIR: 1.15	18 infections, 273288 patient days	1.15
Q1 2012 - Q2 2012 Result 11 infections, 135697 patient days Rating SIR: 0.81	11 infections, 135697 patient days	0.81
Clostridioides difficile infections (CDI) Q1 2024 - Q4 2024 Result 87 infections, 309042 patient days Rating SIR: 0.52	87 infections, 309042 patient days	0.52
Description Clostridium difficile infections summarized as a Standardized Infection Ratio Historical Data
Measure	Result	Rating
Q1 2023 - Q4 2023 Result 76 infections, 298299 patient days Rating SIR: 0.47	76 infections, 298299 patient days	0.47
Q1 2022 - Q4 2022 Result 77 infections, 288988 patient days Rating SIR: 0.49	77 infections, 288988 patient days	0.49
Q1 2021 - Q4 2021 Result 130 infections, 289198 patient days Rating SIR: 0.74	130 infections, 289198 patient days	0.74
Q1 2020 - Q4 2020 Result 131 infections, 255222 patient days Rating SIR: 0.66	131 infections, 255222 patient days	0.66
Q1 2019 - Q4 2019 Result 166 infections, 260000 patient days Rating SIR: 0.81	166 infections, 260000 patient days	0.81
Q1 2018 - Q4 2018 Result 126 infections, 247020 patient days Rating SIR: 0.66	126 infections, 247020 patient days	0.66
Q1 2017 - Q4 2017 Result 160 infections, 226401 patient days Rating SIR: 0.86	160 infections, 226401 patient days	0.86
Q1 2016 - Q4 2016 Result 184 infections, 222582 patient days Rating SIR: 0.93	184 infections, 222582 patient days	0.93
Q1 2015 - Q4 2015 Result 156 infections, 216444 patient days Rating SIR: 0.89	156 infections, 216444 patient days	0.89
Q1 2014 - Q4 2014 Result 164 infections, 215479 patient days Rating SIR: 0.94	164 infections, 215479 patient days	0.94
Q1 2013 - Q4 2013 Result 156 infections, 215654 patient days Rating SIR: 0.88	156 infections, 215654 patient days	0.88
Q1 2012 - Q4 2012 Result 160 infections, 222447 patient days Rating SIR: 0.88	160 infections, 222447 patient days	0.88