Table 2.
Variables | Coef. | Std. Err. | z-Value | p-Value | Marginal Effects |
---|---|---|---|---|---|
non-zero state (not always 0) | |||||
Ptused | 0.012 *** | 0.002 | 7.30 | 0.000 | 1.2% |
Female | −0.098 *** | 0.021 | −4.57 | 0.000 | −9.3% |
Age | −0.010 *** | 0.001 | −12.59 | 0.000 | −1.0% |
Education | −0.034 ** | 0.012 | −2.74 | 0.006 | −3.4% |
White | 0.013 | 0.027 | 0.49 | 0.621 | 1.3% |
Worker | 0.008 | 0.029 | 0.29 | 0.772 | 0.8% |
Driver | −0.446 *** | 0.044 | −10.07 | 0.000 | −36.0% |
HHincome | 0.059 *** | 0.005 | 12.73 | 0.000 | 6.0% |
HHvehcount | −0.082 *** | 0.009 | −8.80 | 0.000 | −7.9% |
Homerent | 0.232 *** | 0.026 | 8.77 | 0.000 | 26.1% |
Pdensity | 0.139 *** | 0.010 | 13.84 | 0.000 | 14.9% |
Rail | 0.110 *** | 0.025 | 4.44 | 0.000 | 11.6% |
Urban | −0.363 *** | 0.055 | −6.62 | 0.000 | −30.5% |
Spring | 0.137 *** | 0.031 | 4.48 | 0.000 | 14.7% |
Summer | −0.086 ** | 0.029 | −2.91 | 0.004 | −8.2% |
Winter | 0.009 | 0.028 | 0.33 | 0.738 | 0.9% |
Intercept | 0.562 *** | 0.104 | 5.39 | 0.000 | |
zero state (odds of always 0) | |||||
Ptused | −0.059 *** | 0.003 | −18.23 | 0.000 | −5.7% |
Female | 0.112 *** | 0.023 | 4.93 | 0.000 | 11.9% |
Age | 0.040 *** | 0.001 | 50.69 | 0.000 | 4.1% |
Education | −0.464 *** | 0.012 | −38.42 | 0.000 | −37.1% |
White | −0.145 *** | 0.029 | −4.95 | 0.000 | −13.5% |
Worker | −0.361 *** | 0.028 | −12.97 | 0.000 | −30.3% |
Driver | −0.354 *** | 0.050 | −7.04 | 0.000 | −29.8% |
HHincome | −0.245 *** | 0.005 | −45.22 | 0.000 | −21.7% |
HHvehcount | 0.210 *** | 0.012 | 18.16 | 0.000 | 23.4% |
Homerent | −0.610 *** | 0.029 | −20.87 | 0.000 | −45.6% |
Pdensity | −0.264 *** | 0.011 | −24.68 | 0.000 | −23.2% |
Rail | −0.316 *** | 0.028 | −11.40 | 0.000 | −27.1% |
Urban | −0.236 *** | 0.050 | −4.72 | 0.000 | −21.0% |
Spring | 0.078 * | 0.033 | 2.41 | 0.016 | 8.2% |
Summer | 0.120 *** | 0.032 | 3.81 | 0.000 | 12.8% |
Winter | −0.078 ** | 0.030 | −2.58 | 0.010 | −7.5% |
Intercept | 6.098 *** | 0.105 | 57.82 | 0.000 | |
Number of obs. | 226,824 | ||||
Nonzero obs. | 17,030 | ||||
Zero obs. | 209,794 | ||||
Log likelihood | −83,927.93 | ||||
LR chi2 | 1766.91 *** |
p-Value: * p < 0.05; ** p < 0.01; *** p < 0.001. (The bold figures in this table represent their p-Values are less than 0.05)