TABLE 3.
Positivity rates of all bottle types combined according to volume compliance status and clinical significance of bottles with positive resultsa
| Volume compliance status | Total no. of bottle pairs | No. (%) of bottles |
|||
|---|---|---|---|---|---|
| All positives | Clinically significant positives | Contaminated | Indeterminate | ||
| Compliant | 3,539 | 257 (7.3) | 203 (5.7) | 49 (1.4) | 5 (0.1) |
| Noncompliant, ≤10 ml | 1,165 | 86 (7.4) | 64 (5.5) | 22 (1.9) | 0 |
| Noncompliant, >10 ml | 1,005 | 87 (8.7) | 75 (7.5)b | 12 (1.2) | 0 |
| All | 5,709 | 430 (7.5) | 342 (6.0) | 83 (1.5) | 5 (0.1) |
a
Positive culture data imply that at least one bottle from the bottle pair gave a positive signal and had a positive subculture.
b
Data were statistically significant compared to rate determined for volume-compliant bottle sets by Pearson's chi-square test (P = 0.044).