Research Article
Technical Efficiency of Fishing Activities: A Case Study of Small-Scale Trawling in the Mekong Delta, Vietnam
Table 3
Parameters estimate of stochastic production frontier and technical inefficiency models.
| Variables | Coefficient | t-ratio |
| (1) Stochastic production frontier | Constant | 2.297 | 1.75 | ln (fishing day) | 1.601 | 3.22 | ln (crew members) | 1.805 | 1.96 | ln (engine) | −1.083 | −1.71 | ln (fishing day) ln (fishing day) | −0.031 | −0.37 | ln (crew members) ln (crew members) | −0.604 | −1.33 | ln (engine) ln (engine) | 0.176 | 2.04 | ln (fishing day) ln (crew members) | 0.060 | 0.26 | ln (fishing day) ln (engine) | −0.211 | −1.47 | ln (crew members) ln (engine) | 0.033 | 0.12 |
| (2) Inefficiency model | Constant | 2.547 | 3.12 | ln (experience) | −0.276 | −2.77 | ln (family crew) | 0.032 | 0.20 | ln (used time of vessel) | 0.162 | 1.62 | Vessel size (1 = medium, 0 = small) | −0.433 | −1.94 | ln (mesh size) | −0.116 | −0.52 | ln (net numbers) | −0.449 | −2.82 | Fishing ground (1 = west sea, 0 = east sea) | −0.410 | −2.19 | ln (operation distance from shore) | −0.188 | −2.42 | Gear registration (1 = yes, 0 = no) | −0.216 | −1.66 | Cooperation (1 = yes, 0 = no) | −0.267 | −2.07 |
| (3) Variance parameter | Observation | 223 | | Log-likelihood | −117.17 | | Wald χ2 (9) | 215.72 | | | 0.105 | | | 0.119 | | = + | 0.224 | | | 0.469 | |
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Note: , , and coefficients are statistically significant at 1%, 5%, and 10%, respectively. |