|  | Estimates | Relative bias (%) | MSE | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Coefficient | Prev.(%) | MLE | FIRTH | logF(1,1) | logF(2,2) | RIDGE | MLE | FIRTH | logF(1,1) | logF(2,2) | RIDGE | MLE | FIRTH | logF(1,1) | logF(2,2) | RIDGE |
 | 5.5 | 0.33 | 0.29 | 0.30 | 0.28 | 0.26 | 10.84 | -3.56 | -1.29 | -6.82 | -14.72 | 0.25 | 0.19 | 0.20 | 0.18 | 0.10 |
 | 11.5 | 0.33 | 0.31 | 0.32 | 0.31 | 0.26 | 8.71 | 2.68 | 5.46 | 2.44 | -12.23 | 0.10 | 0.09 | 0.10 | 0.09 | 0.07 |
β 1 | 20.4 | 0.30 | 0.29 | 0.29 | 0.29 | 0.24 | 0.14 | -4.54 | -1.81 | -3.62 | -19.50 | 0.07 | 0.06 | 0.06 | 0.06 | 0.05 |
 | 39.6 | 0.31 | 0.30 | 0.31 | 0.30 | 0.25 | 4.13 | -0.14 | 2.62 | 1.19 | -16.32 | 0.04 | 0.04 | 0.04 | 0.04 | 0.03 |
 | 59.9 | 0.31 | 0.29 | 0.30 | 0.30 | 0.25 | 1.68 | -2.48 | 0.20 | -1.19 | -16.87 | 0.05 | 0.04 | 0.04 | 0.04 | 0.04 |
 | 5.5 | 0.80 | 0.87 | 0.86 | 0.71 | 0.58 | -11.19 | -3.41 | -4.19 | -21.26 | -35.13 | 0.66 | 0.76 | 0.75 | 0.50 | 0.36 |
 | 11.5 | 0.98 | 0.91 | 0.91 | 0.82 | 0.78 | 8.92 | 1.50 | 0.67 | -8.85 | -13.36 | 0.48 | 0.42 | 0.42 | 0.33 | 0.29 |
β 2 | 20.4 | 0.95 | 0.90 | 0.89 | 0.84 | 0.76 | 5.34 | 0.02 | -0.74 | -6.12 | -15.61 | 0.27 | 0.23 | 0.23 | 0.21 | 0.23 |
 | 39.6 | 0.92 | 0.89 | 0.89 | 0.86 | 0.75 | 2.19 | -0.74 | -1.50 | -4.94 | -16.14 | 0.18 | 0.16 | 0.16 | 0.15 | 0.18 |
 | 59.9 | 0.92 | 0.89 | 0.89 | 0.86 | 0.75 | 2.36 | -0.56 | -1.33 | -4.77 | -16.36 | 0.15 | 0.14 | 0.14 | 0.13 | 0.17 |