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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