Table 5.
Concordance rate of bacteria’s Gram pattern in different bacteria concentrations by UF-5000.
| Group | Gram (+)/Gram(-) | Mixed | Undetectable | overall |
|---|---|---|---|---|
| All patients (n=383) | ||||
| Negative bacteriuria a | 5.9% | 0.0% | 95.1% | 76.9% |
| Positive bacteriuria b | 38.3% | 7.9% | 100.0% | 43.7% |
| Overall | 33.9% | 4.6% | 95.1% | 59.0% |
| Without mixed | – | – | – | 70.5% |
| Patients without having antibiotic treatments 2 weeks prior to inclusion (n=269) | ||||
| Negative bacteriuria a | 8.3% | 0.0% | 96.2% | 88.8% |
| Positive bacteriuria b | 44.7% | 3.7% | 100.0% | 30.3% |
| Overall | 39.8% | 2.3% | 96.2% | 65.4% |
| Without mixed | – | – | – | 78.1% |
| Patients having antibiotic treatments 2 weeks prior to inclusion (n=104) | ||||
| Negative bacteriuria a | 0.0% | 0.0% | 92.0% | 71.9% |
| Positive bacteriuria b | 18.5% | 20.0% | 100.0% | 18.9% |
| Overall | 21.2% | 14.3% | 92.0% | 52.5% |
| Without mixed | – | – | – | 63.9% |
MSU, midstream urine culture.
a
Negative bacteriuria: bacteria count by UF-5000<196/μl.
b
Positive bacteriuria: bacteria count by UF-5000≥196/μl.
The cutoff points of the BACT parameter (196/μl) were determined by the Youden index.