Table 3.
Patient outcome with and without repeated tests during the two periods [(Period A (between 1/4/09 and 4/3/09), Period B (between 5/21/09 and 8/17/09)]
| Period A (n=1221) n (%) |
Period B (n=1160) n (%) |
p value | |
|---|---|---|---|
|
| |||
| First assay positive | 240 (19.7) | 106 (9.1) | < 0.01 |
|
| |||
| Discharge Disposition | |||
| Home | 142 (59.7) | 64 (61.9) | ref |
| Long term care | 69 (29.0) | 31 (29.5) | 0.94 |
| Hospice/expired | 27 (11.3) | 9 (8.6) | 0.44 |
|
| |||
| Readmission within 30 Days | 67 (27.9) | 38 (35.8) | 0.14 |
|
| |||
| Metronidazole before first assay | 30 (12.5) | 12 (11.3) | 0.76 |
|
| |||
| Metronidazole after first assay | 204 (85.0) | 91 (85.8) | 0.84 |
|
| |||
| Vancomycin before first assay | 10 (4.2) | 4 (3.8) | 0.86 |
|
| |||
| Vancomycin after first assay | 83 (34.6) | 35 (33.0) | 0.78 |
|
| |||
| First assay negative and no repeat test | 509 (41.7) | 531 (45.8) | 0.04 |
|
| |||
| Discharge Disposition | |||
| Home | 358 (70.5) | 370 (69.8) | ref |
| Long term care | 113 (22.2) | 118 (22.3) | 0.95 |
| Hospice/expired | 37 (7.3) | 42 (7.9) | 0.69 |
|
| |||
| Readmission within 30 Days | 135 (26.5) | 135 (25.4) | 0.69 |
|
| |||
| length of stay after first negative [median days (range)] | 3 (0 - 80) | 3 (0 - 76) | 0.13 |
|
| |||
| Metronidazole before first assay | 73 (14.3) | 78 (14.7) | 0.87 |
|
| |||
| Metronidazole after first assay | 84 (16.5) | 107 (20.2) | 0.13 |
|
| |||
| Vancomycin before first assay | 14 (2.8) | 8 (1.5) | 0.17 |
|
| |||
| Vancomycin after first assay | 21 (4.1) | 17 (3.2) | 0.43 |
|
| |||
| First assay negative and at least one repeat test positive | 102 (8.4) | 20 (1.7) | < 0.01 |
|
| |||
| Number of repeated tests [median (range)] | 2 (1 - 9) | 1.5 (1 - 7) | 0.58 |
|
| |||
| Discharge Disposition | |||
| Home | 54 (53.5) | 11 (55.0) | ref |
| Long term care | 25 (24.8) | 7 (35.0) | 0.56 |
| Hospice/expired | 22 (21.8) | 2 (10.0) | 0.32 |
|
| |||
| Readmission within 30 Days | 25 (24.5) | 3 (15.0) | 0.36 |
|
| |||
| length of stay after first negative [median days (range)] | 13 (1, 119) | 14.5 (2, 59) | 0.65 |
|
| |||
| Metronidazole before first assay | 13 (12.7) | 0 (0.0) | 0.99 |
|
| |||
| Metronidazole after first assay | 91 (89.2) | 16 (80.0) | 0.26 |
|
| |||
| Vancomycin before first assay | 5 (4.9) | 0 (0.0) | 0.99 |
|
| |||
| Vancomycin after first assay | 50 (49.0) | 7 (35.0) | 0.26 |
|
| |||
| First assay negative and all repeat tests negative | 370 (30.3) | 503 (43.4) | < 0.01 |
|
| |||
| Number of repeated tests | 2 (1 - 15) | 2 (1 - 15) | 0.93 |
|
| |||
| Discharge Disposition | |||
| Home | 223 (60.4) | 293 (58.8) | ref |
| Long term care | 107 (29.0) | 141 (28.3) | 0.99 |
| Hospice/expired | 39 (10.6) | 64 (12.9) | 0.32 |
|
| |||
| Readmission within 30 Days | 89 (24.1) | 115 (22.9) | 0.68 |
|
| |||
| length of stay after first negative [median days (range)] | 7 (1, 80) | 9 (1, 83) | 0.03 |
|
| |||
| Metronidazole before first assay | 44 (11.9) | 75 (14.9) | 0.20 |
|
| |||
| Metronidazole after first assay | 125 (33.8) | 200 (39.8) | 0.07 |
|
| |||
| Vancomycin before first assay | 6 (1.6) | 10 (2.0) | 0.69 |
|
| |||
| Vancomycin after first assay | 31 (8.4) | 26 (5.2) | 0.06 |