Table 21.
MAE values of regression models fitted on data generated with ZINB regression model, n = 600
| Dispersion | Proportion of Zeros | Poisson | NB | ZIP | ZINB |
|---|---|---|---|---|---|
| 0.01 | 0.1 | 1.0242 | 1.0242 | 1.0239 | 1.0243 |
| 0.3 | 3.0994 | 3.0993 | 3.0994 | 3.1010 | |
| 0.5 | 5.1722 | 5.1722 | 5.1723 | 5.1716 | |
| 0.7 | 7.2237 | 7.2233 | 7.2236 | 7.2253 | |
| 1 | 0.1 | 1.1257 | 1.1240 | 1.1248 | 1.1245 |
| 0.3 | 3.1168 | 3.1164 | 3.1165 | 3.1168 | |
| 0.5 | 5.1761 | 5.1760 | 5.1761 | 5.1772 | |
| 0.7 | 7.2476 | 7.2467 | 7.2474 | 7.2470 | |
| 5 | 0.1 | 1.5891 | 1.5964 | 1.5911 | 1.6048 |
| 0.3 | 3.1700 | 3.1734 | 3.1694 | 3.1776 | |
| 0.5 | 5.2008 | 5.1966 | 5.2002 | 5.1975 | |
| 0.7 | 7.2388 | 7.2288 | 7.2372 | 7.2304 | |
| 10 | 0.1 | 1.9827 | 2.0020 | 1.9896 | 2.0355 |
| 0.3 | 3.2512 | 3.2606 | 3.2539 | 3.2740 | |
| 0.5 | 5.1940 | 5.1913 | 5.1934 | 5.1893 | |
| 0.7 | 7.2050 | 7.1947 | 7.2016 | 7.1881 |