Table 2.
Data quality metric | 2015 | 2016 | ||
Accuracy in composite standard curves | ||||
Number of standard curves | 9 | 9 | ||
R2 | 0.996 | 0.999 | ||
Amplification efficiency | 1.933 | 2.097 | ||
Precision: calibrator samples CV | ||||
Number of samples | 55 | 71 | ||
Enterococci target CV | 2.05% | 1.33% | ||
SPC target CV | 1.11% | 1.41% | ||
Inhibition | Frequency | Percent | Frequency | Percent |
ΔCtSPC < 2 | 536 | 99.26 | 1210 | 96.3% |
2 ≤ ΔCtSPC < 3 | 2 | 0.37% | 32 | 2.5% |
ΔCtSPC ≥ 3 | 2 | 0.37% | 14 | 1.1% |
Total | 540 | 100% | 1258 | 100% |
CV coefficient of variation