| Estimating WTP > 0 | Estimating WTP ≥ 0 | ||
Variables | Coefficient | Standard error | Coefficient | Standard error |
Bid | 0.0635873*** | 0.0040687 | 0.0520548*** | 0.0053945 |
Gender | −0.1028469* | 0.063757 | −0.0035554 | 0.0841399 |
Agelv | −0.0389375 | 0.0322158 | −0.1147661*** | 0.0415124 |
Edulv | 0.0064152 | 0.0286522 | 0.0213839 | 0.0375437 |
Fsize | −0.0221529 | 0.0189565 | −0.0273409 | 0.0264607 |
Old | −0.099432 | 0.0740973 | −0.0475708 | 0.0971407 |
Child | −0.0610121 | 0.0802411 | −0.0285448 | 0.1054427 |
Incomelv | 0.0152207* | 0.0089258 | −0.0269118** | 0.0118937 |
a2 | 0.1791745*** | 0.0319282 | 0.2146222*** | 0.042329 |
a3 | −0.0339443 | 0.0290119 | −0.0472969 | 0.0386938 |
a5 | −0.1798625*** | 0.0313472 | −0.1986536*** | 0.0405392 |
a7 | −0.064449* | 0.034341 | −0.0242821 | 0.0455738 |
a8 | 0.0877017* | 0.0458295 | 0.1245392** | 0.060782 |
a9 | 0.0409138 | 0.047809 | 0.0185092 | 0.0632519 |
a10 | −0.0185999 | 0.0432147 | −0.0524947 | 0.0570721 |
a11 | −0.0435198 | 0.035008 | −0.0118441 | 0.0460591 |
a15 | −0.0018867 | 0.0311818 | −0.0365139 | 0.0416763 |
a17 | 0.081767** | 0.0366018 | 0.0555955 | 0.0487531 |
a18 | 0.0373207 | 0.0481915 | 0.0651696 | 0.0624694 |
a19 | 0.0349846 | 0.0433692 | 0.0038634 | 0.0573961 |
v81 | 0.0538262 | 0.0396078 | 0.0734397 | 0.0529416 |
v82 | −0.0537821 | 0.0755971 | −0.0053753 | 0.0999776 |
v90 | 0.4542878*** | 0.119893 | 0.5824295*** | 0.1443776 |
(Constant) | −1.2584*** | 0.2545964 | −0.2062217 | 0.3305791 |
Willing-to-pay | 18.42617 | 23.41487 |