TABLE 6.
Comparison of Isolator system to BACTEC Plus Aerobic/F bottle
| Potential pathogen(s) or contaminant(s) | No. of isolates with the following result:
|
P valueb | ||||
|---|---|---|---|---|---|---|
| Positive with Isolator system only | Positive with BACTEC Plus Aerobic/F bottle only | Positive with both | Positive with neithera | Total | ||
| Pathogens | ||||||
| All microorganisms | 75 | 128 | 245 | 130 | 578 | 0.0003 |
| Staphylococcus aureus | 7 | 17 | 69 | 8 | 101 | 0.0639 |
| Staphylococcus spp., coagulase negative | 10 | 41 | 49 | 39 | 139 | 0.0001 |
| Streptococcus pneumoniae | 0 | 4 | 13 | 2 | 19 | 0.125 |
| Viridans group streptococci | 1 | 13 | 10 | 15 | 39 | 0.002 |
| Enterococcus spp. | 7 | 5 | 5 | 8 | 25 | 0.774 |
| Enterobacteriaceae family | 27 | 26 | 58 | 14 | 125 | 1.0 |
| Pseudomonas spp. | 1 | 3 | 14 | 1 | 19 | 0.625 |
| Obligately anaerobic bacteria | 0 | 1 | 3 | 23 | 27 | 1.0 |
| Other bacteria | 10 | 13 | 14 | 14 | 51 | 0.678 |
| Mycobacterium tuberculosis complex | 1 | 0 | 0 | 2 | 3 | 1.0 |
| Candida spp. | 8 | 5 | 10 | 3 | 26 | 0.581 |
| Cryptococcus neoformans | 1 | 0 | 0 | 1 | 2 | 1.0 |
| Histoplasma capsulatum | 2 | 0 | 0 | 0 | 2 | 0.50 |
| Contaminants | ||||||
| All microorganisms | 133 | 9 | 0 | 16 | 158 | 0.0001 |
| Bacillus spp. | 20 | 0 | 0 | 4 | 24 | 0.0001 |
| Corynebacterium spp., not C. jeikeim | 15 | 4 | 0 | 6 | 25 | 0.019 |
| Propionibacterium spp. | 1 | 1 | 0 | 4 | 6 | 1.0 |
| Staphylococcus spp., coagulase negative | 74 | 4 | 0 | 2 | 80 | 0.0001 |
| Viridans group streptococci | 6 | 0 | 0 | 0 | 6 | 0.031 |
| Other bacteria | 17 | 0 | 0 | 0 | 17 | 0.0001 |
a
Refers to the number of isolates detected with only the BACTEC MYCO/F Lytic bottle or the BACTEC Anaerobic Lytic/10 bottle.
b
Refer to Materials and Methods section for calculation of P values.