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Descriptive analysis of median absolute error of all the formulae included in the analysis
| Formula | Number of studies | Range |
|---|---|---|
| Barrett Universal II | 7 | 0.260-0.540 |
| Full Monte | 1 | 0.462 |
| Haigis | 11 | 0.308-0.570 |
| Hill-RBF | 5 | 0.300-0.520 |
| Hoffer Q | 13 | 0.340-0.580 |
| Holladay 1 | 9 | 0.302-0.630 |
| Holladay 2 | 8 | 0.320-0.560 |
| Olsen | 3 | 0.325-0.350 |
| Super formula | 2 | 0.320-0.370 |
| SRK/T | 10 | 0.327-0.690 |
| T2 | 2 | 0.341-0.415 |
