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Table 2 Descriptive statistics for independent (control) variables

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

Variable All North West North East
Household characteristics
 Age*** 43.759 (12.369) 44.823 (12.292) 41.758 (12.277)
 Sex (0/1)*** 0.941 (0.236) 0.961 (0.194) 0.904 (0.295)
 Education 5.248 (5.931) 5.304 (5.920) 5.142 (5.955)
 Household size*** 8.292 (4.511) 8.558 (4.786) 7.793 (3.897)
 Experience (0/1)*** 0.957 (0.203) 0.942 (0.234) 0.985 (0.121)
 Need credit (0/1)*** 0.514 (0.500) 0.480 (0.500) 0.577 (0.495)
Pedigree information
 Anc (0/1)*** 0.409 (0.492) 0.436 (0.496) 0.358 (0.480)
 NumAnc*** 10.708 (17.538) 11.907 (18.134) 8.395 (16.104)
Farm characteristics
 Size*** 1.938 (2.377) 1.736 (2.101) 2.317 (2.787)
 Slope*** 1.241 (1.002) 1.303 (1.011) 1.124 (0.975)
 Soil fertility 0.072 (0.328) 0.069 (0.339) 0.077 (0.306)
 Distance to field* 26.215 (27.820) 25.551 (25.161) 27.464 (32.224)
Market characteristics
 Distance to seed dealer 68.952 (142.333) 67.058 (167.225) 72.498 (76.381)
 Distance to village market*** 42.510 (61.023) 39.424 (60.115) 48.290 (62.334)
 Distance to district market*** 85.898 (85.329) 79.670 (75.739) 97.563 (99.903)
  1. Means are reported with standard deviations in parentheses. The range for categorical variables is provided. (0/1) indicates a dummy variable equals to one if the response is yes, and 0 otherwise. The t-test and Chi-squared test were used to compare means and proportions between regions, respectively. ***,**,*: differences in means or proportions are statistically significant at 1, 5, or 10% significance level, respectively