Table 3. Summary of Clostridium difficile Event Rates per Hospital, Duke Infection Control Outreach Network, 2013a.
| CDI Incidence Rate | LabID median, (IQR) | Traditional Surveillance median, (IQR) | Median Difference (IQR)a | P Value |
|---|---|---|---|---|
| HO rate per 10,000 patient-days | 5.70 (3.03–7.76) | 3.40 (1.71–4.75) | 1.24 (0.63–2.89) | <.001 |
| CO-HCFA rate per 10,000 patient-days | 2.30 (1.25–3.89) | 2.53 (1.24–3.73) | 0 (−0.48–0) | .50 |
| CA rate per 1,000 admissionsb | 4.01 (1.68–5.56) | 2.77 (1.50–5.51) | 0.51 (0–1.06) | <.001 |
| Recurrent CDI rate per 1,000 admissionsb | 0.330 (0–1.13) | 0.478 (0.19–1.19) | −0.017 (−0.41–0) | <.001 |
| LabID standardized infection ratioc | 0.78 (0.50–1.15) | N/A | N/A | N/A |
Note. CDI, Clostridium difficile infection; LabID, laboratory identified; IQR, interquartile range; HO, hospital-onset CDI; CO-HCFA, community-onset–healthcare-facility-associated CDI; CO, community-onset CDI; CA, community-associated CDI.
a
Median difference between LabID and traditional surveillance CDI incidence rates.
b
Observed LabID and traditional surveillance HO-CDI rates are different than overall data in this table due to missing LabID from one hospital, which was removed from the above analyses due to missing data.
c
SIR predicted NHSN LabID HO-CDI incidence rates were calculated from the Centers for Disease Control risk adjustment calculator.