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Concordance Between IGF-I VARIETE Cohort Reference Intervals and IGF-I Reference Intervals Provided by Each Manufacturer, Expressed as Kappa and Percentages of Observed Agreement
| LIAISON XL | iSYS | IMMULITE 2000 | Mediagnost ELISA | Mediagnost RIA | IGFI -RIACT | |
|---|---|---|---|---|---|---|
| Weighted Kappa | 0.19 | 0.35 | 0.38 | 0.18 | 0.17 | 0.22 |
| % of agreement | 83.28 | 93.36 | 86.97 | 93.55 | 94.77 | 88.21 |
