Median prediction error (MPE, measure of bias) and median absolute prediction error (MAPE, measure of accuracy) when between one and five concentrations were used to guide predicted concentrations
| Concentrations | MPE (95% CI) | MAPE (95% CI) |
| 1 | −0.40 (−8.3 to 0.00) | 44.0 (39.6 to 50.0) |
| 2 | −2.1 (−6.7 to 0.80) | 31.3 (27.4 to 36.5) |
| 3 | 0.10 (−2.9 to 3.7) | 24.1 (19.7 to 27.7) |
| 4 | 1.9 (−2.7 to 5.7) | 21.7 (19.2 to 24.2) |
| 5 | 1.8 (−1.4 to 6.3) | 21.4 (17.5 to 23.7) |