Table 1 CDI Episodes in 2009 according to the definition used to identify CDI

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

–

–

–