Table 2 Estimates of the Tobit regression.
From: Measuring operational and quality-adjusted efficiency of Chilean water companies
Variables | Coff. | St.Err. | T-stat | p value |
|---|---|---|---|---|
Constant | 0.461 | 0.154 | 3.000 | 0.003 |
Customer density | −0.225 | 0.015 | −14.570 | 0.035 |
Ownership | 0.034 | 0.020 | 1.730 | 0.085 |
Wsource | −0.176 | 0.036 | −4.885 | 0.000 |
Time | 0.007 | 0.002 | 3.461 | 0.001 |
Firm-specific Dummy 1 | −0.081 | 0.043 | −1.889 | 0.060 |
Firm-specific Dummy 2 | −0.134 | 0.031 | −4.388 | 0.000 |
Firm-specific Dummy 3 | 0.173 | 0.045 | 3.852 | 0.000 |
Firm-specific Dummy 4 | −0.041 | 0.019 | −2.137 | 0.021 |
Firm-specific Dummy 5 | −0.049 | 0.026 | −1.902 | 0.058 |
Firm-specific Dummy 6 | −0.140 | 0.044 | −3.163 | 0.002 |
Firm-specific Dummy 7 | 0.252 | 0.077 | 3.271 | 0.001 |
Firm-specific Dummy 8 | −0.432 | 0.062 | −6.951 | 0.000 |
Firm-specific Dummy 9 | 0.067 | 0.034 | 1.990 | 0.048 |
Firm-specific Dummy 10 | −0.131 | 0.031 | −4.173 | 0.000 |
Firm-specific Dummy 11 | 0.052 | 0.024 | 2.163 | 0.031 |
Firm-specific Dummy 12 | 0.351 | 0.091 | 3.845 | 0.000 |
Firm-specific Dummy 13 | 0.083 | 0.048 | 1.729 | 0.085 |
Firm-specific Dummy 14 | 0.106 | 0.057 | 1.853 | 0.065 |
Firm-specific Dummy 15 | 0.159 | 0.027 | 5.769 | 0.000 |
Firm-specific Dummy 16 | 0.146 | 0.054 | 2.703 | 0.007 |
Firm-specific Dummy 17 | 0.186 | 0.035 | 5.231 | 0.000 |
Firm-specific Dummy 18 | −0.191 | 0.090 | −2.137 | 0.033 |
Firm-specific Dummy 19 | −0.172 | 0.041 | −4.195 | 0.000 |
Firm-specific Dummy 20 | 0.054 | 0.031 | 1.742 | 0.083 |
X2(24) | 207.700 | |||
p value | 0.000 | |||
Log-likelihood | 224.140 |
