Table 3: Bias and precision of prediction equations of the present and previous studies.
| Observed Li-CL | Predicted Li-CL | ME (95% CI) | MAE (95% CI) | RMSE |
| Present study | 18.41 ± 8.88 | 22.94 ± 7.30 | 4.53 (2.58, 6.48) | 6.21 (4.76, 7.66) | 7.79 |
| Higuchi et al. [6] | 18.41 ± 8.88 | 22.66 ± 5.53 | 4.25 (2.15, 6.36) | 6.46 (4.97, 7.94) | 8.06 |
| Pepin et al. [9] | 18.41 ± 8.88 | 24.04 ± 10.66 | 5.63 (3.29, 7.98) | 7.37 (5.54, 9.20) | 9.48 |
| Jermain et al. [10] | 18.41 ± 8.88 | 16.13 ± 4.98 | -2.28 (-4.18, -0.38) | 4.24 (2.70, 5.79) | 6.58 |
| Yukawa et al. [11] | 18.41 ± 8.88 | 23.97 ± 7.86 | 5.56 (3.17, 7.95) | 7.65 (5.89, 9.41) | 9.56 |
| Abou-Audaet al. [15] | 18.41 ± 8.88 | 33.18 ± 7.63 | 14.77 (12.49, 17.04) | 15.32 (13.42, 17.22) | 16.52 |