Skip to main content

Advertisement

Table 6 Covariates used to estimate PS using the bivariate Probit Model

From: Impact of supply chain coordination on honey farmers’ income in Tigray, Northern Ethiopia

Covariates Contract Cooperative
Coef. Std. err. Coef. Std. err.
Age, HH head -0.03 c 0.01 0.00 0.01
Illiterate, HH head -0.22 0.21 0.05 0.22
Household size 0.06 0.06 -0.13 c 0.05
Active family -0.00 0.13 0.15 0.12
Production experience 0.02 0.02 0.00 0.02
Land size 1.19 b 0.56 -0.28 0.44
Land size2 -0.56 b 0.28 0.09 0.18
Tropical Livestock unit (recall 5 years ago) 0.01 0.01 0.02 a 0.01
No. of modern hive (recall 5 years ago) 0.05 0.03 -0.01 0.05
No. traditional hive (recall 5 years ago) -0.03 0.02 0.03 a 0.01
Distance to Mekelle 0.00 0.00 -0.01 0.01
Distance to asphalt road 0.02 c 0.00 0.02 c 0.01
Distance to RDO 0.03 0.02 0.01 0.02
Constant -1.88 c 0.53 -1.17 b 0.49
Number of observations 393  
Wald chi2(26) = 504.32 c  
Wald test of rho = 0 chi2(1) = 35.77 Prob > chi2 = 0.00
  1. a . b , c significance at 10, 5 and 1% significance level