TABLE 4.
Times to detection of clinically significant (sepsis) isolates from Pedi-BacT and BacT/Alert PF bottles from both study sites
| Organism group | No. of isolates | Time to detection (h)a
|
|||||
|---|---|---|---|---|---|---|---|
| BacT/Alert PF
|
Pedi-BacT
|
||||||
| Mean | Median | Range | Mean | Median | Range | ||
| Candida spp.b | 32 | 22.9 | 23.3 | 7.3–41.5 | 28.8 | 27.7 | 11.5–48.0 |
| Gram-negative bacilli | 25 | 13.2 | 12.0 | 3.3–38.5 | 12.8 | 11.5 | 3.4–29.7 |
| Enterobacteriaceae | 21 | 11.6 | 10.7 | 3.3–18.0 | 11.6 | 11.0 | 3.4–29.7 |
| Fastidious gram-negative organisms | 2 | 28.4 | 28.4 | 18.2–38.5 | 21.1 | 21.0 | 18.8–23.4 |
| Glucose nonfermenters | 2 | 15.8 | 15.8 | 13.3–18.2 | 16.9 | 16.9 | 16.2–17.5 |
| Gram-positive organisms | 81 | 19.8 | 14.7 | 4.0–60.0 | 17.61 | 13.5 | 5.1–122.4 |
| Staphylococcib | 50 | 22.5 | 18.6 | 8.0–60.0 | 20.3 | 14.0 | 7.0–122.4 |
| Streptococci | 25 | 13.6 | 13.3 | 4.0–24.0 | 12.3 | 12.3 | 5.1–20.7 |
| Other | 6 | 22.4 | 15.9 | 9.5–55.2 | 17.6 | 16.0 | 8.7–33.7 |
| Total | 138 | 19.3 | 15.2 | 3.3–60.0 | 19.3 | 14.3 | 3.4–122.4 |
a
Time-to-detection data is presented for monomicrobial isolates recovered in both bottles of a paired set.
b
Only the mean times to detection for staphylococci (earlier in Pedi/BacT; P = 0.0056) and yeast (earlier in BacT/Alert PF; P = 0.0001) were statistically significant.