| Variables | Coefficients | St. errors | t values | P values |
| CONSTANT | 1.030 | 0.497 | 2.070 | 0.038 |
| lnUD | −0.009 | 0.007 | −1.250 | 0.210 |
| lnRW | −0.290 | 0.553 | −0.520 | 0.600 |
| lnLW | −0.012** | 0.005 | −2.290 | 0.022 |
| AGE | 0.052** | 0.020 | 2.550 | 0.011 |
| AGE2 | −0.001** | 0.000 | −2.460 | 0.014 |
| GENDER | 0.038 | 0.024 | 1.590 | 0.113 |
| EDUC | 0.116* | 0.043 | 2.690 | 0.007 |
| VOCTRN | 0.001 | 0.001 | 0.410 | 0.679 |
| FORLANG | 0.215* | 0.069 | 3.120 | 0.002 |
| RESIDENT | 0.008 | 0.021 | 0.370 | 0.710 |
| INSURNC | 0.000 | 0.000 | 0.950 | 0.343 |
| DISAB | −0.013 | 0.049 | −0.260 | 0.793 |
| JOBOFFER | 0.028** | 0.014 | 2.020 | 0.043 |
| METHOD | −0.008 | 0.010 | −0.800 | 0.421 |
| COMPENS | 0.138** | 0.070 | 1.980 | 0.048 |