| Explained Differentials | Unexplained Differentials | |||
| Actual value | Percentage (%) | Actual value | Percentage (%) | |
| 2002 | ||||
| Total | 0.413 | 63.1% | 0.242 | 36.9% |
| Decomposition category: | ||||
| Experience | 0.040 | 6.1% | 0.134 | 20.5% |
| Education | 0.332 | 50.8% | −0.006 | −0.9% |
| Health | 0.002 | 0.3% | −0.059 | −9.0% |
| Party | 0.041 | 6.2% | 0.003 | 0.5% |
| Sex | −0.001 | −0.2% | 0.055 | 8.4% |
| Race | −0.001 | −0.2% | −0.041 | −6.3% |
| Constant | 0.000 | 0.0% | 0.155 | 23.7% |
| 2013 | ||||
| Total | 0.209 | 125.4% | −0.042 | −25.4% |
| Decomposition category: | ||||
| Experience | 0.007 | 4.0% | 0.011 | 6.8% |
| Education | 0.203 | 121.9% | 0.031 | 18.9% |
| Health | −0.005 | −3.1% | 0.021 | 12.5% |
| Party | 0.012 | 7.4% | 0.002 | 1.1% |
| Sex | −0.008 | −4.9% | 0.051 | 30.3% |
| Race | 0.000 | 0.1% | −0.169 | −101.6% |
| Constant | 0.000 | 0.0% | 0.011 | 6.6% |