Variables | Estimate 1 | Pr(>|t|) | Estimate 2 | Pr(>|t|) |
---|---|---|---|---|
Adoption equation (adoption > 0, non-adoption = 0) | ||||
Intercept | 0.4353 | 0.5662 | 0.1377 | 0.7802 |
Gender of household head | 0.4700 | 0.2104 | 0.0320 | 0.8914 |
Marital status of household head | 0.6969 | 0.0309* | 0.3353 | 0.0535* |
Labor availability equivalent | − 0.1123 | 0.3164 | − 0.0284 | 0.5384 |
Geometric mean of adult’s age | − 0.0046 | 0.6442 | − 0.0103 | 0.0890* |
Weighted education variable | 0.0409 | 0.2394 | 0.0105 | 0.5833 |
Knowledge on ISVs in years | 6.2918 | 0.9969 | 5.9261 | 0.0042*** |
Log total household income | 0.0029 | 0.8202 | − 0.0105 | 0.2757 |
Quality of extension services | 0.0980 | 0.0042** | 0.0483 | 0.0295** |
Intensity of research activities | − 0.5194 | 0.0474* | 0.4872 | 0.0407** |
Market participation | 0.3692 | 0.3757 | 0.4954 | 0.0090*** |
Use credit to buy inputs | 0.1038 | 0.7843 | 0.2036 | 0.4593 |
Singida | 0.1200 | 0.6517 | − 0.3409 | 0.0100** |
Kilimanjaro | − 0.6328 | 0.2068 | − 0.9936 | 0.0002*** |
Shinyanga | 0.0317 | 0.9315 | − 0.0797 | 0.7388 |
Information constraint (present = 1, not present = 0) | ||||
Intercept | 0.3039 | 0.2614 | 0.7776 | 0.0175** |
Log total household income | − 0.0145 | 0.1265 | − 0.0204 | 0.0847* |
Quality of extension services | 0.0201 | 0.3850 | − 0.0222 | 0.4034 |
Knowledge on ISVs in years | − 0.0642 | 0.0001*** | − 0.0610 | 0.0209** |
Intensity of research activities | − 0.2509 | 0.1476 | − 0.3116 | 0.1690 |
Market participation | − 0.1276 | 0.5881 | − 0.2113 | 0.4087 |
Use credit to buy inputs | − 0.5157 | 0.2916 | − 0.5202 | 0.4207 |
Capital constraint (present = 1, not present = 0) | ||||
Intercept | 9.6076 | 0.0000*** | 5.0496 | 0.0000*** |
Log total household income | − 0.6369 | 0.0000*** | − 0.3503 | 0.0000*** |
Quality of extension services | − 0.0364 | 0.2636 | − 0.0209 | 0.3308 |
Knowledge on ISVs in years | − 0.7864 | 0.0001*** | − 0.5884 | 0.0010*** |
Intensity of research activities | 0.0938 | 0.6657 | 0.0747 | 0.7636 |
Market participation | − 0.8787 | 0.1359 | − 0.4442 | 0.0565* |
Use credit to buy inputs | − 1.1272 | 0.1920 | − 1.5583 | 0.0499*** |
Sigma | 1.8722 | 0.0001*** | 2.0558 | 0.0001*** |
ρ12 | − 0.9061 | 0.0001*** | ||
ρ13 | − 0.9077 | 0.0001*** | ||
ρ23 | 0.8885 | 0.0001*** | ||
Log-likelihood | − 1299.9 | 0.0783* | − 1285.2 | 0.0089** |
Vuong test | 29.1980 | 0.0001*** | 29.1780 | 0.0001*** |