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Table 4 Results of CRS regression analysis for earthen pond, cage culture and plastic tank
| Variable | Earthen pond (EP) | Cage culture (CC) | Plastic tank (PT) | Marginal effect (EP) | Marginal effect (CC) | Marginal effect (PT) |
|---|---|---|---|---|---|---|
| Const | 0.699035*** (0.215109) | 0.944383** (0.456234) | 0.600425*** (0.230787) | |||
| Sex | − 0.081628** (0.038828) | 0.0329918 (0.051195) | − 0.851995 (0.059994) | − 0.081628 | 0.329918 | − 0.851995 |
| Age | 0.006071* (0.003328) | 0.004336 (0.006365) | 0.012552** (0.006150) | 0.006071 | 0.004336 | 0.021552 |
| Loedu | 0.059853 (0.051778) | 0.014690** (0.007016) | 0.075929 (0.137814) | 0.059853 | 0.014690 | 0.075929 |
| MS | 0.002317 (0.038502) | − 0.110483 (0.079786) | 0.035553 (0.095754) | 0.002317 | − 0.110483 | 0.355534 |
| HHS | − 0.006345 (0.038224) | 0.012930 (0.036218) | − 0.011898 (0.008926) | − 0.006345 | 0.012930 | − 0.011898 |
| REL | 0.037042 (0.038224) | 0.841597 (0.068971) | 0.244353* (0.123038) | 0.037042 | 0.841587 | 0.244353 |
| POCCUP | 0.013553 (0.050137) | 0.120017** (0.055620) | 0.115385 (0.082589) | 0.013553 | 0.120017 | 0.115385 |
| Sigma -2 Log-likelihood | 0.103190 34.540834 | 0.127086 9.422486 | 0.113870 0.898005 |
