Table 2. National Standardized Infection Ratios (SIRs) and facility-specific summary SIRs using HAI data reported from all NHSN facilities reporting during 2011 by HAI and patient population: Central Line-associated Bloodstream Infections (CLABSIs), Catheter-associated Urinary Tract Infections (CAUTIs), and Surgical Site Infections (SSIs) following Surgical Care Improvement Project (SCIP) Procedures
| HAI and Patient Population or Surgical Procedure | No. of Facilities Reporting | No. of Infections |
SIR | 95% CI for SIR |
Facility-specific SIRs 1
|
Facility-specific SIRs at Key Percentiles 2
|
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Observed | Predicted | Lower | Upper | No. Facs with ≥1 Predicted Infection | No. Facs with SIR Significantly ‹ 1.0 | No. Facs with SIR Significantly › 1.0 | 10% | 25% | Median (50%) | 75% | 90% | |||||||
| N | %3 | N | %3 | |||||||||||||||
| CLABSI, all 4 | 3,468 | 18,113 | 30,615.577 | 0.592 | 0.583 | 0.600 | 2,335 | 518 | 22% | 54 | 2% | 0.000 | 0.171 | 0.469 | 0.825 | 1.280 | ||
| ICUs 5 | 3,321 | 10,134 | 18,208.687 | 0.557 | 0.546 | 0.567 | 2,170 | 368 | 17% | 41 | 2% | 0.000 | 0.100 | 0.438 | 0.835 | 1.329 | ||
| Wards 6 | 1,252 | 5,781 | 8,998.281 | 0.642 | 0.626 | 0.659 | 793 | 151 | 19% | 20 | 3% | 0.000 | 0.156 | 0.484 | 0.863 | 1.372 | ||
| NICUs 7 | 928 | 2,198 | 3,408.609 | 0.645 | 0.618 | 0.672 | 594 | 61 | 10% | 10 | 2% | 0.000 | 0.178 | 0.564 | 0.999 | 1.539 | ||
| CAUTIs, all 8 | 1,802 | 14,315 | 15,398.109 | 0.930 | 0.914 | 0.945 | 1,307 | 172 | 13% | 133 | 10% | 0.000 | 0.228 | 0.675 | 1.237 | 1.892 | ||
| ICUs 5 | 1,536 | 8,925 | 9,021.342 | 0.989 | 0.969 | 1.010 | 1,051 | 82 | 8% | 109 | 10% | 0.000 | 0.239 | 0.726 | 1.360 | 2.053 | ||
| Wards 6 | 973 | 5,390 | 6,376.767 | 0.845 | 0.823 | 0.868 | 696 | 86 | 12% | 60 | 9% | 0.000 | 0.200 | 0.644 | 1.118 | 1.871 | ||
| No. of Procedures | ||||||||||||||||||
| SSI, combined SCIP procedures 9 | 2,130 | 748,192 | 6,357 | 7,682.638 | 0.827 | 0.807 | 0.848 | 1,221 | 141 | 12% | 51 | 4% | 0.000 | 0.327 | 0.715 | 1.156 | 1.716 | |
| SSI, Hip arthroplasty | 1,355 | 181,758 | 1,456 | 1,624.199 | 0.896 | 0.851 | 0.944 | 497 | 18 | 4% | 24 | 5% | 0.000 | 0.234 | 0.709 | 1.316 | 1.920 | |
| SSI, Knee arthroplasty | 1,505 | 264,115 | 1,426 | 1,663.435 | 0.857 | 0.813 | 0.903 | 540 | 21 | 4% | 30 | 6% | 0.000 | 0.000 | 0.659 | 1.325 | 1.971 | |
| SSI, Coronary artery bypass graft10 | 553 | 88,225 | 837 | 1,074.975 | 0.779 | 0.727 | 0.833 | 360 | 23 | 6% | 15 | 4% | 0.000 | 0.000 | 0.631 | 1.172 | 1,770 | |
| SSI, Cardiac surgery | 317 | 29,175 | 154 | 220.605 | 0.698 | 0.592 | 0.817 | 62 | 2 | 3% | 2 | 3% | 0.000 | 0.000 | 0.635 | 1.276 | 1.735 | |
| SSI, Peripheral vascular bypass surgery | 100 | 3,558 | 78 | 104.646 | 0.745 | 0.589 | 0.930 | 33 | 0 | 0% | 1 | 3% | 0.000 | 0.000 | 0.752 | 1.094 | 1.392 | |
| SSI, Abdominal aortic aneurysm repair | 165 | 1,218 | 12 | 22.102 | 0.543 | 0.313 | 0.880 | 2 | 0 | 0% | 0 | 0% | . | . | . | . | . | |
| SSI, Colon surgery | 1,150 | 69,872 | 1,679 | 2,108.745 | 0.796 | 0.759 | 0.835 | 553 | 39 | 7% | 20 | 4% | 0.000 | 0.127 | 0.647 | 1.138 | 1.746 | |
| SSI, Rectal surgery | 260 | 3,643 | 77 | 103.555 | 0.744 | 0.587 | 0.929 | 22 | 4 | 18% | 1 | 5% | 0.000 | 0.000 | 0.386 | 0.854 | 1.516 | |
| SSI, Abdominal hysterectomy | 1,223 | 83,540 | 531 | 636.954 | 0.834 | 0.764 | 0.908 | 193 | 1 | 1% | 17 | 9% | 0.000 | 0.000 | 0.695 | 1.246 | 2.220 | |
| SSI, Vaginal hysterectomy | 528 | 23,088 | 107 | 123.422 | 0.867 | 0.710 | 1.048 | 29 | 0 | 0% | 1 | 3% | 0.000 | 0.000 | 0.727 | 1,412 | 1.714 | |
Footnotes for Table 2:
- Facility-specific SIR data is only displayed for a location group or procedure category 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.
- Percent of facilities with at least one predicted infection who had an SIR significantly less than or greater than 1.0
- Data from all ICUs, wards (and other non-critical care locations), and NICUs. This excludes LTAC locations (or facilities) and inpatient rehabilitation locations (or facilities).
- Data from all ICUs; excludes wards (and other non-critical care locations), NICUs, LTAC locations (or facilities), and inpatient rehabilitation locations (or facilities).
- 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]).
- Data from all NICU locations, including Level II/III and Level III nurseries. For purposes of this report, both umbilical-line and central-line associated bloodstream infections are considered CLABSIs.
- Data from all ICUs and wards (and other non-critical care locations). This excludes NICUs, LTAC locations (or facilities) and inpatient rehabilitation locations (or facilities).
- SSIs included are those following select surgical procedures approximating procedures covered by SCIP, using NHSN surgical procedure categorizations that were classified as deep incisional or organ/space, and detected upon admission or readmission. (Specific NHSN procedures and the corresponding SCIP procedures are listed in Appendix A.)
- Coronary artery bypass graft includes procedures with either chest only or chest and donor site incisions
