Table 22.
MAE values of regression models fitted on data generated with ZINB regression model, n = 1000
| Dispersion | Proportion of Zeros | Poisson | NB | ZIP | ZINB |
|---|---|---|---|---|---|
| 0.01 | 0.1 | 1.0317 | 1.0316 | 1.0316 | 1.0317 |
| 0.3 | 3.1048 | 3.1048 | 3.1049 | 3.1056 | |
| 0.5 | 5.1641 | 5.1639 | 5.1641 | 5.1643 | |
| 0.7 | 7.2360 | 7.2357 | 7.2359 | 7.2351 | |
| 1 | 0.1 | 1.0590 | 1.0588 | 1.0583 | 1.0590 |
| 0.3 | 3.0980 | 3.0979 | 3.0980 | 3.0990 | |
| 0.5 | 5.1694 | 5.1688 | 5.1692 | 5.1694 | |
| 0.7 | 7.2343 | 7.2338 | 7.2343 | 7.2340 | |
| 5 | 0.1 | 1.2959 | 1.2958 | 1.2943 | 1.3004 |
| 0.3 | 3.1097 | 3.1079 | 3.1089 | 3.1095 | |
| 0.5 | 5.1660 | 5.1646 | 5.1658 | 5.1644 | |
| 0.7 | 7.2351 | 7.2316 | 7.2341 | 7.2313 | |
| 10 | 0.1 | 1.6692 | 1.6708 | 1.6680 | 1.6957 |
| 0.3 | 3.1550 | 3.1544 | 3.1542 | 3.1567 | |
| 0.5 | 5.1485 | 5.1454 | 5.1479 | 5.1441 | |
| 0.7 | 7.2436 | 7.2350 | 7.2432 | 7.2339 |