Table 6 Recursive mixed-process model estimates, first specification with the richness index
From: IITA’s genebank, cowpea diversity on farms, and farmers’ welfare in Nigeria
Explanatory variable | First specification | |
|---|---|---|
Richness index (dr) | Anc | |
Endogenous variable | ||
Anc | 0.293 (0.357) | – |
Household characteristics | ||
Age | – | − 0.001 (0.003) |
Sex | – | − 0.119 (0.144) |
Education | – | 0.011 (0.019) |
Education2 | − 0.001 (0.001) | |
Household size | − 0.017* (0.010) | – |
Need credit | – | − 0.157** (0.067) |
Experience | – | 1.030*** (0.204) |
Farm characteristics | ||
Size | − 0.232*** (0.019) | – |
Slope | 0.593*** (0.047) | – |
Distance to farm | 0.004** (0.002) | – |
Soil fertility | – | 0.379*** (0.107) |
Market characteristics | ||
Distance to seed dealer | – | 0.000 (0.000) |
Distance to village market | – | 0.000 (0.001) |
Distance to district market | – | 0.001 (0.000) |
Geographical zone | ||
North East | − 0.443*** (0.099) | − 0.253*** (0.071) |
Constant | 2.444*** (0.187) | − 0.951*** (0.293) |
Prob > chi2 | 0.000 | |
N | 1557 | |