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Table 7 Recursive mixed-process model estimates, second specification with the inverse dominance index

From: IITA’s genebank, cowpea diversity on farms, and farmers’ welfare in Nigeria

Explanatory variable Second specification
Inverse dominance index (dd) Anc
Endogenous variable
 Anc 2.270*** (0.110)
Household characteristics
 Age 0.002 (0.002)
 Sex − 0.078 (0.098)
 Education − 0.01 (0.013)
 Education2   − 0.000 (0.001)
 Household size 0.009 (0.008)
 Need credit − 0.192*** (0.048)
 Experience 0.490*** (0.141)
Farm characteristics
 Size 0.017 (0.015)
 Slope − 0.139*** (0.036)
 Distance to farm 0.001 (0.001)
 Soil fertility 0.221*** (0.082)
Market characteristics
 Distance to seed dealer 0.000 (0.000)
 Distance to village market 0.001*** (0.000)
 Distance to district market 0.000 (0.000)
Geographical zone
 North East 0.078 (0.101) − 0.195*** (0.067)
 Constant 1.914*** (0.109) − 0.525*** (0.202)
 Prob > chi2 0.000
 N 1559
  1. Column 1 is a tobit regression with the inverse dominance index as dependent variable. Column 2 is a probit regression with genebank ancestry as dependent variable. Standard errors are in parentheses. ***,**,*: estimates are statistically significant at 1, 5, or 10% significance level, respectively