Surgical Site Infections (SSIs) for Operative Procedures in California Hospitals

These datasets show surgical site infections (SSIs) reported by California hospitals to the California Department of Public Health (CDPH), Healthcare-Associated Infections (HAI) Program, via the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN), in accordance with Health and Safety Code (HSC) section 1288.55. California hospitals track and report deep incisional and organ/space SSIs for adults and pediatric (<18 years of age) patients for 28 types of operative procedures: abdominal aortic aneurysm repair; abdominal hysterectomy; appendix surgery; bile duct, liver or pancreatic surgery, cardiac surgery; Cesarean section; colon surgery; coronary artery bypass graft with both chest and donor site incisions; coronary artery bypass graft with chest incision only*; exploratory abdominal surgery (laparotomy); gallbladder surgery; gastric surgery; heart transplant; hip prosthesis; kidney surgery; kidney transplant; knee prosthesis; laminectomy; liver transplant; open reduction of fracture; ovarian surgery; pacemaker surgery; rectal surgery; small bowel surgery; spinal fusion; spleen surgery; thoracic surgery; vaginal hysterectomy The SSI data tables include information on the statewide and hospital-specific SSI incidence by operative procedure types, displaying procedure counts, number of infections observed (reported) and predicted. NHSN calculates the number of predicted infections using procedure-specific risk adjustment logistic regression models based on 2015 national baseline data and that accounts for particular patient-level factors and hospital characteristics found to be significant predictors of SSI incidence. Detailed information about the variables included in each dataset are described in the accompanying data dictionaries for the year of interest. For more information about NHSN’s statistical models, please review the “NHSN Guide to the SIR” at https://www.cdc.gov/nhsn/ps-analysis-resources/index.html To link the CDPH facility IDs with those from other Departments, like HCAI, please refer to the "Licensed Facility Cross-Walk" Open Data table at https://data.chhs.ca.gov/dataset/licensed-facility-crosswalk For more information about HAIs in California hospitals, please visit: https://www.cdph.ca.gov/Programs/CHCQ/HAI/Pages/AnnualHAIReports.aspx

Data files

Data title and descriptionAccess dataFile detailsLast updated

SSI in Adult Patients, January 1 – December 31, 2023

This table shows the surgical site infections (SSI) data for 28 operative procedures performed on adult patients from January 1 – December 31, 2023 reported by California hospitals to the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN). Data were downloaded from NHSN on April 3, 2024.


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CSV
08/06/24

SSI in Pediatric Patients, January 1 – December 31, 2023

This table shows the surgical site infections (SSI) data for 28 operative procedures performed on pediatric patients from January 1 – December 31, 2023 reported by California hospitals to the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN). Data were downloaded from NHSN on April 3, 2024.


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CSV
08/06/24

Hospitals who did not report surgical procedures, January 1 – December 31, 2023

This table shows the California hospitals that did not perform any of the 28 reportable procedures from January 1 – December 31, 2023.


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CSV
06/24/24

SSI in Adult Patients 2022

This table shows the surgical site infections (SSI) data for 28 operative procedures performed on adult patients from January 1 – December 31, 2022 reported by California hospitals to the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN). Data were downloaded from NHSN on April 1, 2023.


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CSV
12/04/23

SSI in Pediatric Patients 2022

This table shows the surgical site infections (SSI) data for 28 operative procedures performed on pediatric patients from January 1 – December 31, 2022 reported by California hospitals to the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN). Data were downloaded from NHSN on April 1, 2023.


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CSV
12/04/23

Hospitals who did not report surgical procedures, 2022

This table shows the California hospitals that did not perform any of the 28 reportable procedures from January 1 – December 31, 2022.


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CSV
12/04/23

SSI in Adult Patients 2021

This table shows the surgical site infections (SSI) data for 28 operative procedures performed on adult patients from January 1 – December 31, 2021 reported by California hospitals to the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN). Data were downloaded from NHSN on April 11, 2022.


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CSV
12/04/23

SSI in Pediatric Patients, January 1 – December 31, 2021

This table shows the surgical site infections (SSI) data for 28 operative procedures performed on pediatric patients from January 1 – December 31, 2021 reported by California hospitals to the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN). Data were downloaded from NHSN on April 11, 2022.


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CSV
12/04/23

Hospitals who did not report surgical procedures, January 1 – December 31, 2021

This table shows the California hospitals that did not perform any of the 28 reportable procedures from January 1 – December 31, 2021.


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CSV
12/04/23

SSI in Adult Patients, January 1 – June 30, 2020 (Updated annually)

This table shows the surgical site infections (SSI) data for 28 operative procedures performed on adult patients from January 1 – June 30, 2020 reported by California hospitals to the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN). Data were downloaded from NHSN on April 1, 2021.


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CSV
12/04/23

SSI in Adult Patients, July 1 – December 31, 2020 (Updated annually)

This table shows the surgical site infections (SSI) data for 28 operative procedures performed on adult patients from July 1 – December 31, 2020 reported by California hospitals to the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN). Data were downloaded from NHSN on April 1, 2021.


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CSV
12/04/23

SSI in Pediatric Patients, January 1 – June 30, 2020 (Updated annually)

This table shows the surgical site infections (SSI) data for 28 operative procedures performed on pediatric patients in January 1 – June 30, 2020 reported by California hospitals to the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN). Data were downloaded from NHSN on April 1, 2021.


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CSV
12/04/23

SSI in Pediatric Patients, July 1 – December 31, 2020 (Updated annually)

This table shows the surgical site infections (SSI) data for 28 operative procedures performed on pediatric patients in July 1 – December 31, 2020 reported by California hospitals to the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN). Data were downloaded from NHSN on April 1, 2021.


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CSV
12/04/23

Hospitals who did not report surgical procedures, January 1 – June 30, 2020 (Updated annually)

This table shows the California hospitals that did not perform any of the 28 reportable procedures in January 1 – June 30, 2020.


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CSV
12/04/23

Hospitals who did not report surgical procedures, July 1 – December 31, 2020 (Updated annually)

This table shows the California hospitals that did not perform any of the 28 reportable procedures in July 1 – December 31, 2020.


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CSV
12/04/23

SSI in Adult Patients, 2019

This table shows the surgical site infections (SSI) data for 28 operative procedures performed on adult patients in 2019 reported by California hospitals to the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN). Data were downloaded from NHSN on April 2, 2020.


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CSV
12/04/23

SSI in Pediatric Patients, 2019

This table shows the surgical site infections (SSI) data for 28 operative procedures performed on pediatric patients in 2019 reported by California hospitals to the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN). Data were downloaded from NHSN on April 2, 2020.


Download
CSV
12/04/23

Hospitals who did not report surgical procedures, 2019

This table shows the California hospitals that did not perform any of the 28 reportable procedures in 2019.


Download
CSV
12/04/23

SSI in Adult Patients, 2018

This table shows surgical site infections (SSI) data for 28 operative procedures performed on adult patients reported by California hospitals via the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN). Data download date: April, 12, 2019.


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CSV
12/04/23

SSI in Pediatric Patients, 2018

This table shows surgical site infections (SSI) data for any of the 28 reportable operative procedures performed on pediatric patients reported by California hospitals via the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN). Data download date: April, 12, 2019.


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CSV
12/04/23

Hospitals who did not report surgical procedures, 2018

This table shows the 2018 California hospitals that did not perform any of the 28 reportable procedures.


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CSV
12/04/23

SSI in Adult Patients, 2017

This table shows the incidence of surgical site infections (SSI) reported by California general acute care hospitals for 28 operative procedures performed on adult patients (procedures listed in the Data Dictionary). SSI incidence is presented using the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN) risk adjusted standardized infection ratios (SIR) for SSI. The SIR is calculated by dividing the number of observed infections by the number of predicted infections. The number of predicted infections is calculated using SSI probabilities estimated from multivariate logistic regression models constructed from 2016 NHSN data, which represents a reference population (baseline) for each procedure type. SIRs are based on procedure date, not the date of the infection event. All procedure and infection data for surgical procedures performed between January 1, 2017, and December 31, 2017, were downloaded from NHSN in 12, 2018. The SIR reported in this table include only complex SSI (deep incisional and organ/space) identified during hospital Admission or Readmission to the same hospital. NHSN calculates an SIR only if the number of observed is at least 1 to meet a minimum precision criterion. CDPH calculated an SIR if the predicted number of infections was less than 1 and greater than or equal to 0.2; these SIRs and comparisons are not as precise as SIRs based on a larger number of predicted infections, but provide more hospitals with a published interpretation of their data. For a detailed explanation, please see the Technical Notes. Each hospital's reported procedure and infection counts are displayed along with an SIR, the 95 percent confidence interval for the SIR, and the statistical comparison as follows: • Better - lower or fewer infections than predicted, • Same - no difference in number of observed and predicted infections, or • Worse - higher or more infections than predicted.


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CSV
12/04/23

SSI in Pediatric Patients, 2017

This table shows the incidence of surgical site infections (SSI) reported by California general acute care hospitals for 28 operative procedures performed on pediatric patients (procedures listed in the Data Dictionary). The Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN) does not yet have robust pediatric SSI risk adjustment models for many of the procedures, therefore California Department of Public Health (CDPH) is reporting only numbers of SSI and numbers of procedures performed. All procedure and infection data for surgical procedures performed between January 1, 2017, and December 31, 2017, were downloaded from NHSN in 2018. For a detailed explanation, please see the Technical Notes. Each hospital's reported procedure and infection counts are displayed.


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CSV
12/04/23

Hospitals who did not report surgical procedures, 2017

This table shows the 2017 California hospitals that did not perform any of the 28 reportable procedures.


Download
CSV
12/04/23

SSI in Adult Patients, 2016

This table shows the incidence of surgical site infections (SSI) reported by California general acute care hospitals for 28 operative procedures performed on adult patients (procedures listed in the Data Dictionary). SSI incidence is presented using the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN) risk adjusted standardized infection ratios (SIR) for SSI. The SIR is calculated by dividing the number of observed infections by the number of predicted infections. The number of predicted infections is calculated using SSI probabilities estimated from multivariate logistic regression models constructed from 2015 NHSN data, which represents a reference population (baseline) for each procedure type. SIRs are based on procedure date, not the date of the infection event. All procedure and infection data for surgical procedures performed between January 1, 2016, and December 31, 2016, were downloaded from NHSN on July 12, 2017. The SIR reported in this table include only complex SSI (deep incisional and organ/space) identified during hospital Admission or Readmission to the same hospital. NHSN calculates an SIR only if the number of observed is at least 1 to meet a minimum precision criterion. CDPH calculated an SIR if the predicted number of infections was less than 1 and greater than or equal to 0.2; these SIRs and comparisons are not as precise as SIRs based on a larger number of predicted infections, but provide more hospitals with a published interpretation of their data. For a detailed explanation, please see the Technical Notes. Each hospital's reported procedure and infection counts are displayed along with an SIR, the 95 percent confidence interval for the SIR, and the statistical comparison as follows: • Better - lower or fewer infections than predicted, • Same - no difference in number of observed and predicted infections, or • Worse - higher or more infections than predicted.


Download
CSV
12/04/23

SSI in Pediatric Patients, 2016

This table shows the incidence of surgical site infections (SSI) reported by California general acute care hospitals for 28 operative procedures performed on pediatric patients (procedures listed in the Data Dictionary). The Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN) does not yet have robust pediatric SSI risk adjustment models for many of the procedures, therefore California Department of Public Health (CDPH) is reporting only numbers of SSI and numbers of procedures performed. All procedure and infection data for surgical procedures performed between January 1, 2016, and December 31, 2016, were downloaded from NHSN on July 12, 2017. For a detailed explanation, please see the Technical Notes. Each hospital's reported procedure and infection counts are displayed.


Download
CSV
12/04/23

Hospitals who did not report surgical procedures, 2016

This table shows the 2016 California hospitals that did not perform any of the 28 reportable procedures.


Download
CSV
12/04/23

SSIs for 5 Operative Procedures, 2015

This table shows the surgical site infections (SSIs) reported by a hospital for the 5 Operative procedures without risk adjusted comparisons (Heart transplant, Kidney surgery, Pacemaker Surgery, Spleen surgery, Ovarian surgery), to the Center for Disease Control and Prevention National Healthcare Safety Network (NHSN). All procedure and infection data entered before May 3, 2016 for surgical procedures performed between January 1 and December 31, 2015 were downloaded from NHSN for this data release.


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CSV
12/04/23

SSIs for 24 Operative Procedures, 2015

This table shows the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN) risk adjusted standardized infection ratios (SIR) for surgical site infections (SSIs) reported by hospitals for 24 operative procedures. The procedures with NHSN Standardized Infections Ratios (SIR) are: Abdominal Aortic Aneurysm Repair, Appendix surgery, Bile Duct, Liver or Pancreatic surgery, Cardiac surgery, Coronary artery bypass graft with both chest and donor site incisions, Coronary artery bypass graft with chest incision only, Gallbladder surgery, Colon surgery, Cesarean section, Spinal Fusion, Open reduction of fracture, Gastric surgery, Hip prosthesis, Abdominal hysterectomy, Knee prosthesis, Kidney transplant, Laminectomy, Liver transplant, Rectal surgery, Refusion of spine, Small bowel surgery, Thoracic surgery, Vaginal hysterectomy, Exploratory laparotomy. These data are in reference to original national baseline data collected by NHSN (i.e. Baseline 1). For information about Baseline 1 and the 2015 rebaseline for data 2016-present, please refer to https://www.cdc.gov/nhsn/2015rebaseline/index.html All procedure and infection data entered before May 3, 2016 for surgical procedures performed between January 1 and December 31, 2015 were downloaded from NHSN for this data release


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CSV
12/04/23

SSIs for 5 Operative Procedures, 2014

This table shows the surgical site infections (SSIs) reported by a hospital for the 5 Operative procedures without risk adjusted comparisons (Heart transplant, Kidney surgery, Pacemaker Surgery, Spleen surgery, Ovarian surgery), to the Center for Disease Control and Prevention National Healthcare Safety Network (NHSN). All procedure and infection data entered before May 4, 2015 for surgical procedures performed between January 1 and December 31, 2014 were downloaded from NHSN for this data release.


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CSV
12/04/23

SSIs for 24 Operative Procedures, 2014

This table shows the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN) risk adjusted standardized infection ratios (SIR) for surgical site infections (SSIs) reported by hospitals for 24 operative procedures. The procedures with NHSN Standardized Infections Ratios (SIR) are: Abdominal Aortic Aneurysm Repair, Appendix surgery, Bile Duct, Liver or Pancreatic surgery, Cardiac surgery, Coronary artery bypass graft with both chest and donor site incisions, Coronary artery bypass graft with chest incision only, Gallbladder surgery, Colon surgery, Cesarean section, Spinal Fusion, Open reduction of fracture, Gastric surgery, Hip prosthesis, Abdominal hysterectomy, Knee prosthesis, Kidney transplant, Laminectomy, Liver transplant, Rectal surgery, Refusion of spine, Small bowel surgery, Thoracic surgery, Vaginal hysterectomy, Exploratory laparotomy. These data are in reference to original national baseline data collected by NHSN (i.e. Baseline 1). For information about Baseline 1 and the 2015 rebaseline for data 2016-present, please refer to https://www.cdc.gov/nhsn/2015rebaseline/index.html All procedure and infection data entered before May 4, 2015 for surgical procedures performed between January 1 and December 31, 2014 were downloaded from NHSN for this data release


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CSV
12/04/23

SSIs for 5 Operative Procedures, 2013

This table shows the surgical site infections (SSIs) reported by a hospital for the 5 Operative procedures without risk adjusted comparisons (Heart transplant, Kidney surgery, Pacemaker Surgery, Spleen surgery, Ovarian surgery), to the Center for Disease Control and Prevention National Healthcare Safety Network (NHSN). All procedure and infection data entered before May 1, 2014 for surgical procedures performed between January 1 and December 31, 2013 were downloaded from NHSN for this data release.


Download
CSV
12/04/23

SSIs for 24 Operative Procedures, 2013

This table shows the Centers for Disease Control and Prevention National Healthcare Safety Network (NHSN) risk adjusted standardized infection ratios (SIR) for surgical site infections (SSIs) reported by hospitals for 24 operative procedures. The procedures with NHSN Standardized Infections Ratios (SIR) are: Abdominal Aortic Aneurysm Repair, Appendix surgery, Bile Duct, Liver or Pancreatic surgery, Cardiac surgery, Coronary artery bypass graft with both chest and donor site incisions, Coronary artery bypass graft with chest incision only, Gallbladder surgery, Colon surgery, Cesarean section, Spinal Fusion, Open reduction of fracture, Gastric surgery, Hip prosthesis, Abdominal hysterectomy, Knee prosthesis, Kidney transplant, Laminectomy, Liver transplant, Rectal surgery, Refusion of spine, Small bowel surgery, Thoracic surgery, Vaginal hysterectomy, Exploratory laparotomy. These data are in reference to original national baseline data collected by NHSN (i.e. Baseline 1). For information about Baseline 1 and the 2015 rebaseline for data 2016-present, please refer to https://www.cdc.gov/nhsn/2015rebaseline/index.html All procedure and infection data entered before May 1, 2014 for surgical procedures performed between January 1 and December 31, 2013 were downloaded from NHSN for this data release.


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CSV
12/04/23

All resource data


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ZIP
08/29/24