Table 5.
Agreement between beach management that result from E. coli culture testing and, as the gold standard, enterococci qPCR testing
| Prior day sample | Same day sample | |||
|---|---|---|---|---|
| Beach | n | Description, Kappa (95% LCL, UCL) | n | Description, Kappa (95% LCL, UCL) |
| 1 | 105 | None, 0.00 (−0.13, 0.14) | 106 | Minimal, 0.26 (0.10, 0.41) |
| 2 | 40 | undefined | 40 | undefined |
| 3 | 44 | None, 0.13 (−0.25, 0.52) | 44 | None, 0.13 (−0.25, 0.52) |
| 4 | 43 | undefined | 43 | undefined |
| 5 | 46 | None, −0.08 (−0.18, 0.02) | 46 | None, 0.25 (−0.04, 0.54) |
| 6 | 100 | None, 0.14 (−0.05, 0.32) | 103 | Weak, 0.44 (0.23, 0.64) |
| 7 | 94 | Inverse, −0.07 (−0.12, −0.02) | 96 | None, 0.07 (−0.16, 0.29) |
| 8 | 102 | None, −0.02 (−0.16, 0.12) | 104 | None, 0.14 (−0.05, 0.33) |
| 9 | 102 | None, −0.08 (−0.18, 0.03) | 104 | None, 0.11 (−0.05, 0.26) |
| ALL | 676 | None, 0.01 (−0.04, 0.07 | 686 | Minimal, 0.22 (0.14, 0.30) |
Left half of the table: agreement between Day1 qPCR results and Day0 E. coli culture results. Right half of the table: agreement between Day0 E. coli culture results and Day0 qPCR results. “Undefined”: no qPCR exceedance