Table 5.
Results of ML models estimated with four alternatives, with panel effect.
| Models | ML5 | ML5.1 | ML5.2 | ||||
|---|---|---|---|---|---|---|---|
| Value | T-test | Value | T-test | ||||
| Constant Alt. HST1 | ASC1 | – | – | – | – | – | – |
| Constant Alt. BUS | ASC2 | −0.001 | −0.01 | 1.25 | −5.08 | *** | |
| Constant Alt. HST2 | ASC3 | – | – | – | – | – | – |
| Constant Alt. CAR | ASC4 | −4,2 | −14.27 | *** | −0.128 | −1.19 | |
| Total travel cost | θP | 0,007 | 2.68 | *** | 0 | −0.65 | |
| Travel time | θT | −0,028 | −8.27 | *** | −0,003 | −1.19 | |
| Theta | μ | 8,43 | 1.19 | 123 | 1.19 | ||
| Sigma1 | 2,89 | 15.39 | *** | 3.85 | 13.74 | *** | |
| Sigma2 | – | – | – | 0.062 | 0.052 | ||
| ZEROSigma1 | 8,35 | 7,7 | *** | 14.8 | 6.87 | *** | |
| ZEROSigma2 | – | – | – | 0.004 | 0.59 | ||
| R-Squared | R2 | 0.56 | 0.574 | ||||
| Adjusted R-Squared | 0.559 | 0.573 | |||||
| Log-likelihood | I(θ) | −1843,563 | −1783,333 | ||||
| Sample | N | 6045 | 6045 | ||||
| Generation error distribution | DRAW | Halton | 125 | Halton | 20 | ||
| Willingness to pay | VOT | −3,929 | 24,309 | ||||
Value is the estimated coefficient for each of the explanatory variables included in the model. T-test: * 90%, ** 95%, and
***
99% level of significance. It is the statistic that allows to contrast the null hypothesis of individual non-significance of each of the variables included in the model, (the contrast is performed through the level of significance associated with that statistic, so that if the level of significance is greater than 0.05 the variable is not statistically significant).