Table 8 Recursive mixed-process model estimates, third specification with the concentration index
From: IITA’s genebank, cowpea diversity on farms, and farmers’ welfare in Nigeria
Explanatory variable | Third specification | |
|---|---|---|
Concentration index (dc) | Anc | |
Endogenous variable | ||
Anc | − 0.066*** (0.025) | – |
Household characteristics | ||
Age | – | 0.000 (0.003) |
Sex | – | − 0.138 (0.140) |
Education | – | − 0.002 (0.019) |
Education2 | − 0.001 (0.001) | |
Household size | − 0.002*** (0.001) | – |
Need credit | – | − 0.189*** (0.066) |
Experience | – | 0.998*** (0.202) |
Farm characteristics | ||
Size | − 0.003** (0.001) | – |
Slope | − 0.007** (0.003) | – |
Distance to farm | − 0.000 (0.000) | – |
Soil fertility | – | 0.400*** (0.105) |
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 | − 0.004 (0.007) | − 0.245*** (0.071) |
Constant | 0.232*** (0.013) | − 0.927*** (0.285) |
Prob > chi2 | 0.000 | |
N | 1559 | |