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Hospital-onset Clostridium difficile infection rates by surveillance with ICD-9 codes and toxin assays.
| Hospital | No. of discharges | ICD-9 codes | Toxin Assay | p | ||
|---|---|---|---|---|---|---|
|
| ||||||
| No. of CDI cases | CDI rate per 1,000 discharges | No. of CDI cases | CDI rate per 1,000 discharges | |||
| A | 318,847 | 3,334 | 10.5 | 2,460 | 7.7 | <.001 |
| B | 110,437 | 915 | 8.3 | 863 | 7.8 | .219 |
| C | 254,073 | 1,253 | 4.9 | 548 | 2.2 | <.001 |
| D | 84,984 | 345 | 4.1 | 302 | 3.6 | .092 |
| E | 162,351 | 1,404 | 8.6 | 581 | 3.6 | <.001 |
| Total | 930,692 | 7,251 | 7.8 | 4,754 | 5.1 | <.001 |
