TABLE 1.
Summary of RPR screen concordance between AIX1000 system and ASI carda
| AIX1000 parameter | ASI card value(s) |
|||||
|---|---|---|---|---|---|---|
| RX (%) | NR (%) | Total (%) | % PPA | % NPA | K (95% CI) | |
| Retrospective specimens | ||||||
| RX | 48 (48) | 2 (2) | 50 (50) | |||
| NR | 2 (2) | 48 (48) | 50 (50) | |||
| Total | 50 (50) | 50 (50) | 100 (100) | 96.0 | 96.0 | 0.920 (0.843–0.997) |
| Prospective specimens | ||||||
| RX | 20 (1.9) | 11 (1.1) | 31 (3.0) | |||
| NR | 1 (0.1) | 996 (96.9) | 997 (97.0) | |||
| Total | 21 (2.0) | 1,007 (98.0) | 1,028 | 95.2 | 98.8 | 0.763 (0.634–0.893) |
a
CI, confidence interval; Κ, kappa coefficient; NPA, negative percent agreement; NR, nonreactive; PPA, positive percent agreement; RX, reactive.