Table 1.
CDI Episodes in 2009 according to the definition used to identify CDI
| Definition | Medicarea | Lab/Rxa | SIDa | Premier | NIS |
|---|---|---|---|---|---|
| Positive test + diagnosis + Rx | N/A | N/A | – | 4,623 (72.8) | – |
| Diagnosis + Rx within 14 days after hospital discharge or during hospitalization | 1,303 (23.4) | 1,088 (65.5) | – | 1,347 (21.2) | – |
| Diagnosis + Positive test during hospitalization | N/A | N/A | – | 108 (1.7) | – |
| Primary diagnosis | 994 (17.8) | 194 (11.7) | 20,894 (30.5) | 13 (0.02) | 110,553 (32.8) |
| Diagnosis on admission | 338 (6.1) | N/A | N/A | 2 (< 0.01) | N/A |
| Positive test only | N/A | N/A | N/A | 205 (3.2) | N/A |
| Secondary diagnosis | 2,941 (52.7) | 379 (22.8) | 47,546 (69.5) | 52 (0.08) | 226,012 (67.2) |
| Total Inpatient CDI | 5,576 | 1,661 | 68,440 | 6,350 | 336,565 |
| Positive test + Diagnosis + Rx within +/−14 days of diagnosis or positive test date(s) | N/A | 87 (2.7) | – | – | – |
| Diagnosis on ≥ 2 service dates + Rx within +/−14 days of diagnosis date(s) | 422 (10.4) | 409 (12.6) | – | – | – |
| Positive test + diagnosis within +/−14 days | N/A | 6 (0.2) | – | – | – |
| Positive test + Rx within +/−14 days | N/A | 436 (13.4) | – | – | – |
| Diagnosis + Rx + lab test within +/−14 days of the diagnosis or lab test date(s) | 133 (3.3) | 148 (4.6) | – | – | – |
| Diagnosis + Rx within +/−14 days | 334 (8.2) | 524 (16.1) | – | – | – |
| Positive test only | N/A | 262 (8.1) | – | – | – |
| Diagnosis only | 3,162 (77.6) | 1,251 (38.5) | – | – | – |
| CDI test + Rx | 25 (0.6) | 129 (4.0) | – | – | – |
| Total Outpatient CDI | 4,076 | 3,252 | – | – | – |
aNumber of unique CDI episodes spaced at least 12 weeks apart
Rx = non-topical metronidazole or oral vancomycin therapy