Table 2. National Standardized Infection Ratios (SIRs) and facility-specific percentiles using HAI data reported from all NHSN facilities reporting during 2010 by HAI and patient population: Central Line-associated Bloodstream Infections (CLABSIs), Catheter-associated Urinary Tract Infections (CAUTIs), and Surgical Site Infections (SSIs) combined procedures
HAI and Patient Population or Surgical Procedure | No. of Facilities Reporting | No. of Infections |
SIR | 95% CI for SIR |
Facility-specific SIRs at Key Percentiles1
|
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---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Observed | Predicted | Lower | Upper | 10% | 25% | Median (50%) | 75% | 90% | |||||
CLABSI, all2 | 2,389 | 13,812 | 20,184.815 | 0.684 | 0.673 | 0.696 | 0.000 | 0.232 | 0.564 | 0.961 | 1.525 | ||
ICUs 3 | 2,140 | 7,206 | 11,020.512 | 0.654 | 0.639 | 0.669 | 0.000 | 0.197 | 0.538 | 0.947 | 1.531 | ||
Wards 4 | 1,069 | 5,241 | 7,200.263 | 0.728 | 0.708 | 0.748 | 0.000 | 0.187 | 0.533 | 0.972 | 1.560 | ||
NICUs 5 | 507 | 1,365 | 1,964.039 | 0.695 | 0.659 | 0.733 | 0.000 | 0.237 | 0.611 | 1.098 | 1.752 | ||
CAUTIs ,all6 | 1,086 | 9,995 | 10,656.872 | 0.938 | 0.920 | 0.956 | 0.000 | 0.293 | 0.734 | 1.243 | 1.900 | ||
ICUs3 | 806 | 5,621 | 5,811.590 | 0.967 | 0.942 | 0.993 | 0.000 | 0.252 | 0.714 | 1.345 | 1.865 | ||
Wards4 | 688 | 4,374 | 4,845.282 | 0.903 | 0.876 | 0.930 | 0.000 | 0.271 | 0.725 | 1.229 | 1.967 | ||
No. of Procedures | |||||||||||||
SSI, combined procedures7 | 1,385 | 529,038 | 4,737 | 5,170.309 | 0.916 | 0.890 | 0.943 | 0.000 | 0.325 | 0.799 | 1.292 | 1.813 | |
Hip arthroplasty | 954 | 128,721 | 1,091 | 1,123.897 | 0.971 | 0.914 | 1.030 | 0.000 | 0.239 | 0.799 | 1.408 | 2.252 | |
Knee arthroplasty | 966 | 192,804 | 1,090 | 1,221.747 | 0.892 | 0.840 | 0.947 | 0.000 | 0.000 | 0.695 | 1.329 | 2.143 | |
Coronary artery bypass graft8 | 425 | 79,612 | 868 | 1,058.919 | 0.820 | 0.766 | 0.876 | 0.000 | 0.000 | 0.569 | 1.170 | 1.955 | |
Cardiac surgery | 165 | 19,036 | 119 | 142.436 | 0.835 | 0.692 | 1.000 | 0.000 | 0.000 | 0.637 | 0.916 | 1.451 | |
Peripheral vascular bypass surgery | 50 | 2,575 | 63 | 67.379 | 0.935 | 0.718 | 1.196 | 0.281 | 0.493 | 0.895 | 1.221 | 1.550 | |
Abdominal aortic aneurysm repair | 31 | 492 | 5 | 7.715 | 0.648 | 0.255 | 1.363 | . | . | . | . | . | |
Colon surgery | 462 | 37,383 | 971 | 1,067.917 | 0.909 | 0.853 | 0.968 | 0.000 | 0.257 | 0.788 | 1.367 | 1.871 | |
Rectal surgery | 21 | 685 | 28 | 21.792 | 1.285 | 0.854 | 1.857 | 0.000 | 0.000 | 1.141 | 1.771 | 2.289 | |
Abdominal hysterectomy | 604 | 54,113 | 407 | 382.109 | 1.065 | 0.964 | 1.174 | 0.000 | 0.000 | 0.765 | 1.594 | 2.526 | |
Vaginal hysterectomy | 233 | 13,617 | 95 | 76.398 | 1.243 | 1.006 | 1.520 | 0.000 | 0.359 | 0.906 | 1.177 | 1.991 |
Footnotes for Table 2:
- To improve estimating SIR distributions, facility-specific key percentiles were only calculated for patient populations or surgical procedures in which ≥20 facilities had a predicted number of HAIs (e.g., CLABSI, CAUTI, or SSI) ≥1 during the reporting period. If a single facility’s predicted number of HAIs was <1.0, a facility-specific SIR was neither calculated nor included in the determinations of the distribution of facility-specific SIRs.
- Data from all ICUs, wards (and other non-critical care locations), NICUs and LTAC locations (or facilities).
- Data from all ICUs; excludes wards (and other non-critical care locations), NICUs and LTAC locations (or facilities).
- Data from all wards (for this table wards also include stepdown, specialty care areas including hematology/oncology, bone marrow transplant, and LTAC 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, wards (and other non-critical care locations), and LTAC locations (or facilities).
- SSIs included are those following select surgical procedures approximating procedures covered by SCIP, using only SSIs that were classified as deep incisional or organ/space, and detected upon admission or readmission. (Specific NHSN procedures are listed in Appendix A.)
- Coronary artery bypass graft includes procedures with either chest only or chest and donor site incisions.