Table 3.
Agreement of Each IGF-I Assay Method Against Each of the Others, Expressed as Weighted Kappa and Percentages of Observed Agreement
| LIAISON XL | iSYS | IMMULITE 2000 | Mediagnost ELISA | Mediagnost RIA | IGFI- RIACT | |
|---|---|---|---|---|---|---|
| LIAISON XL | — | 0.49 | 0.50 | 0.47 | 0.38 | 0.48 |
| 94.86% | 94.83% | 94.95% | 94.05% | 95.22% | ||
| iSYS | 0.49 | — | 0.64 | 0.61 | 0.70 | 0.64 |
| 94.86% | 96.08% | 96.11% | 97.00% | 96.46% | ||
| IMMULITE 2000 | 0.50 | 0.64 | — | 0.61 | 0.58 | 0.64 |
| 94.83% | 96.08% | 95.95% | 95.73% | 96.32% | ||
| Mediagnost ELISA | 0.47 | 0.61 | 0.61 | — | 0.59 | 0.53 |
| 94.95% | 96.11% | 95.95% | 96.00% | 95.66% | ||
| Mediagnost | 0.38 | 0.70 | 0.58 | 0.59 | — | 0.48 |
| RIA | 94.05% | 97.00% | 95.73% | 96.00% | 95.22% | |
| IGFI- RIACT | 0.48 | 0.64 | 0.64 | 0.53 | 0.48 | — |
| 95.22% | 96.46% | 96.32% | 95.66% | 95.22% |